Human Body — English Vocabulary

The Nervous System47 words

• neuron🔊nouna cell that is responsible for transmitting nerve impulses between the brain and the rest of the body
• spinal cord🔊nounthe inner part of the spine containing a mass of nerves that connects the brain to almost all the body parts
• solar plexus🔊noun(anatomy) a network of nerves in the abdomen and in front of the aorta that contains several ganglia
• ganglion🔊noun(anatomy) a mass of neurons that form a nerve center in the body outside the brain or spinal cord
• glial🔊adjectiverelated to or associated with glia or glial cells in the nervous system
• plexus🔊nouna complex arrangement or network of nerve fibers or blood vessels that intersect and intertwine within the body
• interneuron🔊nouna neuron that acts as an intermediary between sensory neurons and motor neurons, or between other interneurons
• fascicle🔊nouna bundle of muscle fibers or nerve fibers bound together by connective tissue
• motor neuron🔊nouna nerve cell that transmits signals from the central nervous system to the muscles, enabling voluntary movements
• pons🔊nouna region in the brainstem that acts as a bridge, connecting different parts of the brain and aiding in essential functions like sleep regulation and sensory-motor coordination
• optic nerve🔊nounthe bundle of nerve fibers that carries visual information from the eye to the brain
• mixed cranial nerve🔊nouna cranial nerve that contains both sensory and motor fibers
• ulnar nerve🔊nouna nerve in the upper limb that provides sensation and controls muscle movement in the hand and forearm
• olfactory nerve🔊nouna sensory nerve responsible for the sense of smell
• oculomotor nerve🔊nouna cranial nerve responsible for controlling the movement of the eye muscles
• neural network🔊nouna complex system of interconnected neurons that processes and transmits information in the body
• trochlear nerve🔊nounthe fourth cranial nerve responsible for controlling the movement of the superior oblique muscle of the eye
• trigeminal nerve🔊nounthe fifth cranial nerve that provides sensory information from the face and controls the muscles responsible for chewing
• schwann cell🔊nouna glial cell in the peripheral nervous system that forms myelin sheaths around nerve fibers
• facial nerve🔊nouna cranial nerve responsible for controlling the muscles of facial expression
• vestibulocochlear nerve🔊nouna cranial nerve responsible for hearing and balance
• glossopharyngeal nerve🔊nouna cranial nerve responsible for sensory and motor functions in the head and neck region
• accessory nerve🔊nouna cranial nerve responsible for controlling certain muscles involved in head and neck movements
• hypoglossal nerve🔊nouna cranial nerve responsible for controlling the movements of the tongue
• abducens nerve🔊nouna cranial nerve responsible for controlling the movement of the lateral rectus muscle, which enables the eye to move laterally or outward
• motor nerve fiber🔊nouna type of nerve cell extension that carries signals from the central nervous system to the muscles, enabling voluntary movement
• parasympathetic nervous system🔊nouna division of the autonomic nervous system responsible for regulating rest, digestion, and other essential bodily functions
• nerve cell🔊nouna specialized cell that transmits electrical signals in the nervous system
• central nervous system🔊nounthe complex network of the brain and spinal cord that controls and coordinates bodily functions and processes
• glial cell🔊nouna non-neuronal cell in the nervous system that provides support and protection for neurons, helps maintain homeostasis, and participates in signaling and other important functions
• peripheral nervous system🔊nouna network of nerves and ganglia that connects the central nervous system to the organs, muscles, and tissues of the body, facilitating communication and control
• autonomic nervous system🔊nounthe part of the peripheral nervous system that controls and regulates involuntary bodily functions, including heart rate, digestion, and glandular activity
• autonomic ganglion🔊nouna cluster of nerve cell bodies that mediates communication between the central nervous system and the organs
• autonomic plexus🔊nouna network of nerves and ganglia that regulates involuntary bodily functions
• sympathetic nervous system🔊nouna network of nerves that prepares the body for stressful or emergency situations by activating the "fight or flight" response
• somatic nervous system🔊nounthe part of the peripheral nervous system that is responsible for the voluntary control of body movements and the reception of external stimuli.
• motor nerve🔊nouna type of nerve that carries signals from the central nervous system to the muscles, enabling voluntary muscle movements
• somatic sensory system🔊nouna network of nerves and receptors that enables the perception of touch, temperature, pain, and body position
• cranial nerve🔊nouna bundle of nerves that emerge directly from the brain and innervate structures in the head and neck
• spinal nerve🔊nouna singular anatomical structure that carries sensory and motor signals between the spinal cord and the rest of the body
• spinal nerve root🔊nounthe initial segment of a spinal nerve that emerges from the spinal cord
• sensory nerve🔊nouna body part that carries sensory information from the body to the central nervous system
• sensory neuron🔊nouna nerve cell that transmits sensory information from the body to the central nervous system
• sensory fiber🔊nouna nerve fiber that carries sensory information from sensory receptors to the central nervous system
• sensory cortex🔊nounthe part of the brain that processes and interprets sensory information from the body
• axon🔊nouna long, slender projection of a nerve cell that conducts electrical impulses away from the cell body towards other neurons or target cells
• femoral nerve🔊nouna key nerve responsible for transmitting signals to the muscles and skin of the thigh and leg

The Brain58 words

• cerebrum🔊nounthe largest and most developed part of the brain, responsible for conscious thought, perception, movement, and memory
• cerebellum🔊nouna region of the brain that coordinates movement, balance, and posture
• brainstem🔊nounthe vital bridge between the brain and the spinal cord, controlling essential functions and relaying information throughout the body
• corpus callosum🔊nouna bundle of nerve fibers that connects the left and right hemispheres of the brain, facilitating communication
• corpus amygdaloideum🔊nounan almond-shaped structure in the brain that plays a key role in processing emotions
• cortex🔊noun(anatomy) the outer layer of the anterior part of the brain, called cerebrum, containing gray matter
• motor cortex🔊nouna region of the cerebral cortex responsible for planning, controlling, and executing voluntary movements
• gyrus🔊nouna raised fold on the surface of the cerebral cortex
• gyrus cinguli🔊nouna curved fold in the cerebral cortex that is involved in emotion, memory, and attention
• frontal cortex🔊nounthe anterior part of the brain responsible for higher cognitive functions and complex behaviors
• frontal lobe🔊nouna region of the brain responsible for cognitive functions such as decision-making or problem-solving
• occipital cortex🔊nounthe region in the brain that processes visual information
• occipital lobe🔊nouna body part located at the posterior end of the cerebral cortex in the brain, responsible for processing and interpreting visual information received from the eyes
• occipital gyrus🔊nounan anatomical structure located in the occipital lobe of the brain. It is involved in visual processing
• sensory strip🔊nouna brain region that processes sensory information related to touch, temperature, pain, and proprioception from different parts of the body
• frontal gyrus🔊nouna curved fold of tissue located in the frontal lobe of the brain
• parietal cortex🔊nounthe outer layer of neural tissue in the parietal lobe involved in sensory processing and spatial awareness
• parietal lobe🔊nouna region of the brain involved in sensory processing, spatial awareness, and cognitive functions
• parietal gyrus🔊nouna folded region of brain tissue in the parietal lobe, involved in sensory perception, spatial processing, and motor planning
• temporal lobe🔊nouna region of the brain responsible for auditory processing, memory, language comprehension, and visual perception
• temporal cortex🔊nounthe region of the brain within the temporal lobe that is involved in auditory processing, memory, language comprehension, and visual recognition
• temporal gyrus🔊nouna curved fold of tissue located within the temporal lobe of the brain, involved in various functions such as auditory processing, language, memory, and emotion
• Broca's area🔊nouna region in the brain responsible for speech production and language processing
• motor strip🔊nouna region of the brain located in the frontal lobe that is responsible for controlling voluntary movement of muscles throughout the body
• Wernicke's area🔊nouna region of the brain involved in language comprehension and processing
• sulcus🔊nouna shallow groove or indentation on the surface of the brain, separating different regions or lobes
• central sulcus🔊nouna deep groove in the brain that separates the frontal and parietal lobes
• sulcus lateralis cerebri🔊nouna groove on the lateral surface of the cerebrum that separates the frontal and parietal lobes from the temporal lobe
• white matter🔊nounthe tissue in the central nervous system composed of myelinated nerve fibers
• hypothalamus🔊noun(anatomy) a region in the central lower part of the brain that is responsible for autonomic nervous system and the release of hormones
• thalamus🔊nouna region in the brain that acts as a relay station for sensory information
• basal ganglion🔊nouna group of structures in the brain involved in motor control and reward-based learning
• limbic system🔊nouna complex subcortical nervous system of the brain that is associated with emotions and drives
• limbic brain🔊nounthe interconnected structures within the brain's limbic system, involved in emotions, memory, and motivation
• amygdala🔊nouna small, almond-shaped structure in the brain that processes emotions
• putamen🔊nouna part of the basal ganglia in the brain, involved in motor control and coordination
• lateral ventricle🔊nouna fluid-filled chamber in the brain that plays a vital role in cerebrospinal fluid circulation and brain health
• prefrontal cortex🔊nounthe front part of the brain involved in higher cognition and executive functions
• cingulate gyrus🔊nouna brain structure involved in emotional and cognitive processing, located above the corpus callosum
• choroid plexus🔊nouna network of blood vessels in the brain that produces cerebrospinal fluid
• cerebrospinal fluid🔊nouna protective fluid that surrounds the brain and spinal cord, providing cushioning and facilitating nutrient exchange
• foramen of monro🔊nouna small opening that connects the lateral ventricles of the brain, allowing the flow of cerebrospinal fluid between them
• third ventricle🔊nouna fluid-filled cavity in the brain that plays a role in cerebrospinal fluid circulation and communication between brain regions
• fourth ventricle🔊nouna fluid-filled cavity located in the brainstem, involved in the production and circulation of cerebrospinal fluid
• subarachnoid space🔊nouna fluid-filled area between the arachnoid membrane and the pia mater in the central nervous system
• cisterna🔊nouna fluid-filled space within the body, particularly within the brain or spinal cord, that acts as a reservoir for cerebrospinal fluid
• central canal🔊nouna narrow fluid-filled channel that runs through the center of the spinal cord and carries cerebrospinal fluid
• meninges🔊nouna three-layered protective covering that surrounds the brain and spinal cord
• foramen magnum🔊nounan opening at the posterior aspect of the skull through which the spinal cord passes
• dura mater🔊nounthe tough, fibrous membrane that surrounds and protects the brain and spinal cord
• arachnoid🔊nouna thin membrane that covers the brain and spinal cord, playing a role in protecting and supporting the central nervous system
• pia mater🔊nounthe innermost layer of the meninges, which is a protective membrane surrounding the brain and spinal cord
• middle cranial fossa🔊nounthe middle and largest of the three cranial fossae, located at the base of the skull and housing the temporal lobes of the brain
• posterior cranial fossa🔊nouna cavity located at the base of the skull that holds the cerebellum, pons, and medulla oblongata
• anterior cranial fossa🔊nounthe shallowest and most anterior of the three cranial fossae, located at the base of the skull and housing the frontal lobes of the brain
• cerebral cortex🔊nounthe outer layer of the brain responsible for higher cognitive functions and information processing
• olfactory brain🔊nouna structure located in the front part of the brain involved in the sense of smell
• olfactory bulb🔊nouna brain structure involved in processing smells and detecting odor molecules

The Musculoskeletal System57 words

• bone🔊nounany of the hard pieces making up the skeleton in humans and some animals
• cartilage🔊nounan elastic tissue that supports or connects joints in an infant and turns into skeleton during growth
• cartilage bone🔊nouna transformed cartilaginous structure that has undergone ossification
• ligament🔊noun(anatomy) a strong band of tissue which connects two bones or cartilages or keeps organs in place
• bursa🔊nouna fluid-filled sac that reduces friction between tissues such as bones, tendons, and muscles
• axial skeleton🔊nounthe central part of the skeleton that includes the skull, vertebral column, and ribcage
• axial muscle🔊nouna single muscle that is located along the central axis of the body, including the head, neck, and trunk
• Achilles tendon🔊nouna tendon in the leg that attaches the muscles of the calf to the bone of the heel
• tendon🔊noun(anatomy) an elastic cord or band that connects a muscle to a bone
• skull🔊nounthe bony structure that surrounds and provides protection for a person's or animal's brain
• muscle🔊nouna piece of body tissue that is made tight or relaxed when we want to move a particular part of our body
• hamstring🔊noun(anatomy) one of the five tendons at the back of someone's knee
• backbone🔊nouna line of connected bones going down from your neck to tail bone in the middle of the back
• biceps🔊nounthe large muscle at the front of the upper part of the arm, which flexes the forearm
• breastbone🔊nouna long flat bone at the center of the chest that connects the ribs and the shoulder girdle
• cheekbone🔊nounthe bone that is just below the eye
• ciliary body🔊noun(anatomy) the structure that encloses the inner surface of the eye which consists of the muscle which makes the eye move
• clavicle🔊nounthe long, curved bone that connects the shoulder blade to the sternum
• collarbone🔊nouneither of the pair of bones that go across the top of the chest from the base of the neck to the shoulders
• cranium🔊noun(anatomy) the bone structure that surrounds and protects the brain
• deltoid🔊noun(anatomy) a large muscle, triangular in shape that covers the shoulder joint and helps the arm to abduct and rotate
• extensor🔊nouna muscle that helps a body part or limb be stretched out by contraction
• femur🔊noun(anatomy) the longest bone in the top part of the human leg between the hip and the knee
• humerus🔊noun(anatomy) a long bone in the arm that extends from the shoulder to the elbow
• fibula🔊noun(anatomy) the outer and narrower of the two bones between the ankle and the knee
• flexor🔊noun(anatomy) a muscle that allows one to bend a limb or body part by contraction
• jawbone🔊nouneither of the bones that form the jaw, particularly the lower jaw
• kneecap🔊nouna small bone that covers the front of the knee joint
• metatarsal🔊noun(anatomy) any of the five bones of the foot between the ankle and the toes
• musculature🔊noun(biology) the overall arrangement or the system of muscles in a human or an animal's body
• occipital bone🔊noun(anatomy) the trapezoidal bone that is at the base and lower back of the cranium, though which the spinal cord passes
• frontal bone🔊nounthe singular bone located at the front of the skull, forming the forehead and upper eye sockets for structural support and protection
• parietal bone🔊nouna cranial bone that forms the sides and roof of the skull, offering protection for the brain
• sphenoid bone🔊nouna butterfly-shaped bone, contributing to its structure and housing important structures
• temporal bone🔊nouna cranial bone located on the sides and base of the skull, housing the ear structures and contributing to jaw movement
• zygoma🔊nouna facial bone that forms the prominence of the cheek and connects various other facial bones
• zygomatic bone🔊nouna facial bone that contributes to the structure of the cheek and forms part of the eye socket
• maxilla🔊nouna facial bone that forms the central part of the face, supporting the upper teeth
• patella🔊noun(anatomy) a small bone triangular in shape that covers and protects the front part of the knee joint
• pelvis🔊noun(anatomy) the large round bone structure that the limbs and the spine are joined to, which also protects the abdominal organs
• quadriceps🔊noun(anatomy) any of the four large muscles at the front of the thigh that allow the knee joint to stretch
• ribcage🔊noun(anatomy) the bony structure in the chest formed by the ribs which protects organs in the thoracic cavity
• sacrum🔊noun(anatomy) a large bone at the lower part of the spinal column between the two hip bones of the pelvis
• shin bone🔊nounthe inner and larger bone of the pair of bones between the ankle and the knee
• scapula🔊noun(anatomy) each of the pair of triangular bones that connect the humerus to the clavicle
• shoulder blade🔊nouneach of the pair of triangular bones that connect the upper arm bone with the collar bone
• sinew🔊nounan elastic cord or band that connects a muscle to a bone
• sphincter🔊noun(anatomy) a ring of muscle that can open or close an opening, such as anus, in the body
• sternum🔊noun(anatomy) a long flat bone at the center of the chest that connects the ribs to the shoulder girdle
• tail bone🔊nounthe small triangular bone at the end of the spinal column in humans or tailless primates
• tarsal🔊noun(anatomy) any of the cluster of seven small bones in the foot between the ankle and upper foot
• thighbone🔊nounthe longest bone in the human skeleton which is between the hip and the knee
• tibia🔊noun(anatomy) the inner and larger of the two bones between the ankle and the knee
• triceps🔊noun(anatomy) the three-headed muscle of the arm that functions as the extensor of the elbow joint
• ulna🔊noun(anatomy) the thinner and longer bone of the human forearm extending from the elbow to the wrist
• vertebra🔊noun(anatomy) any of the bony segments and cartilages of the spinal column
• ossicle🔊nouna small bone found in the middle ear that helps transmit sound vibrations and facilitate hearing

Glands and Hormones49 words

• gland🔊nounan organ in the body that produces certain chemical substances to be used in the body or to be discharged into the surroundings
• tarsal gland🔊nouna sebaceous gland located in the eyelid that produces and secretes oil to lubricate the surface of the eye
• pituitary gland🔊nouna small gland located at the base of the brain that secretes hormones and regulates various bodily functions
• pineal gland🔊nouna small endocrine gland located in the brain that secretes melatonin and helps regulate the sleep-wake cycle
• thyroid gland🔊nounan endocrine gland located in the neck that produces hormones essential for regulating metabolism and growth
• parathyroid gland🔊nouna small endocrine gland near the thyroid gland that produces parathyroid hormone
• thymus🔊nouna specialized organ of the immune system located near the heart that produces T cells and plays a crucial role in the development of the immune system in early life
• aldosterone🔊nouna hormone produced by the adrenal glands that regulates electrolyte balance and fluid levels in the body
• corticosteroid🔊nouna class of hormones produced by the adrenal glands
• adrenaline🔊nouna body hormone produced in case of anger, fear, or excitement that makes the heart beat faster and the body react quicker
• adrenocorticotrophic hormone🔊nouna hormone secreted by the pituitary gland that stimulates the production and release of cortisol from the adrenal glands
• antidiuretic hormone🔊nouna hormone produced by the hypothalamus and released by the pituitary gland that regulates water balance in the body
• growth hormone🔊nouna hormone that stimulates growth, development, and metabolism in the body
• luteinizing hormone🔊nouna hormone secreted by the pituitary gland that regulates ovulation and testosterone production
• follicle-stimulating hormone🔊nouna hormone that regulates the growth and development of follicles in the ovaries and the production of sperm in the testes
• oxytocin🔊nouna hormone that regulates childbirth, lactation, and social bonding
• prolactin🔊nouna hormone that stimulates milk production and plays a role in reproductive functions
• thyroid-stimulating hormone🔊nouna hormone that stimulates the thyroid gland to produce and release thyroid hormones
• renin🔊nounan enzyme involved in regulating blood pressure and fluid balance by initiating the production of angiotensin II
• angiotensin🔊nouna peptide hormone that constricts blood vessels and stimulates the release of aldosterone
• erythropoietin🔊nouna hormone that stimulates the production of red blood cells in the body
• glucagon🔊nouna hormone that raises blood sugar levels by promoting the breakdown of glycogen in the liver
• insulin🔊nouna hormone that is responsible for controlling the level of glucose in the blood, the lack of which can cause diabetes
• estrogen🔊nouna hormone primarily responsible for female reproductive development and regulation
• progesterone🔊nouna hormone produced by the ovaries that plays a vital role in regulating the menstrual cycle and supporting pregnancy
• thyroid hormone🔊nouna hormone produced by the thyroid gland that regulates metabolism and various physiological processes in the body
• parathyroid hormone🔊nouna hormone produced by the parathyroid glands that regulates calcium and phosphate levels in the body
• epinephrine🔊nouna hormone that increases heart rate and blood flow
• norepinephrine🔊nouna hormone and neurotransmitter that regulates the body's stress response
• melatonin🔊nouna hormone produced by the pineal gland that regulates sleep-wake cycles and promotes restful sleep
• growth hormone-releasing factor🔊nouna hormone that stimulates the release of growth hormone from the pituitary gland, regulating growth and metabolism
• thyrotrophic hormone🔊nouna hormone produced by the pituitary gland that stimulates the thyroid gland to produce and release thyroid hormones
• corticotropin🔊nouna hormone that stimulates the release of cortisol from the adrenal glands
• salivary gland🔊nounan exocrine gland that produces and releases saliva into the mouth, aiding in digestion
• seminal vesicle🔊nouna paired gland in the male reproductive system that secretes fluids to nourish and support the sperm cells
• gonad🔊nouna reproductive organ that produces gametes and sex hormones
• mammary gland🔊nouna glandular organ in mammals that produces and secretes milk for nourishing offspring
• sublingual gland🔊nouna salivary gland located beneath the tongue that produces and secretes saliva
• submandibular gland🔊nouna salivary gland located beneath the jaw that produces and releases saliva
• parotid gland🔊nouna major salivary gland located near the ear that produces and secretes saliva into the mouth
• sweat gland🔊nouna small exocrine gland in the skin that produces and secretes sweat
• sebaceous gland🔊nouna small exocrine gland in the skin that produces and secretes sebum
• eccrine gland🔊nouna sweat gland responsible for regulating body temperature through the production and secretion of sweat
• apocrine gland🔊nouna type of sweat gland that produces a thicker secretion containing proteins and lipids
• gonadotrophic hormone🔊nouna hormone that regulates the activity of the gonads, promoting their development and function
• testis🔊nouna male reproductive organ responsible for the production of sperm and the secretion of testosterone
• duct gland🔊nouna specialized structure in the human body that produces and releases substances through a duct
• prostate🔊nouna gland in the male body that produces fluid for semen and surrounds the urethra, aiding in urine control
• gastrointestinal hormone🔊nouna group of hormones secreted by cells in the digestive system that regulate various processes

The Immune System36 words

• white blood cell🔊nounone of the many cells that protects the body against diseases
• antibody🔊nouna blood protein produced to fight diseases or infections, or in response to foreign substances in the body
• antigen🔊nounany foreign substance in the body that can trigger a response from the immune system
• basophil🔊nouna type of white blood cell involved in allergic reactions and immune responses in the human body
• lymphocyte🔊nouna type of white blood cell involved in the immune response, responsible for recognizing and destroying foreign invaders in the body
• B lymphocyte🔊nounan immune cell that produces antibodies to help protect the body against infections
• T lymphocyte🔊nouna type of white blood cell that plays a central role in the immune response by recognizing and attacking infected or abnormal cells
• antigen-presenting cell🔊nouna type of immune cell that displays foreign antigens on its surface to activate other cells of the immune system, such as T cells and B cells, to mount an immune response against the pathogen
• cytokine🔊nouna small protein that regulates immune responses and cell communication in the human body
• monocyte🔊nouna type of white blood cell involved in immune responses and inflammation
• memory B cell🔊nounan immune cell that can respond more quickly and effectively to a pathogen upon re-exposure
• memory T cell🔊nounan immune cell that retains information about previously encountered pathogens to mount a quicker and more efficient immune response upon re-exposure
• plasma cell🔊nouna mature B lymphocyte that secretes antibodies
• dendritic cell🔊nouna type of immune cell that plays a critical role in presenting antigens to other immune cells, helping to initiate and regulate immune responses
• granulocyte🔊nouna type of white blood cell characterized by cytoplasmic granules and involved in the body's immune response
• human leukocyte antigen🔊nouna group of proteins that are found on the surface of cells and play a key role in the immune system recognition and response
• cytotoxic t cell🔊nouna type of immune cell that can directly kill infected or abnormal cells in the body
• helper T cell🔊nouna type of immune cell that plays a central role in coordinating and regulating immune responses
• regulatory T cell🔊nouna type of immune cell that helps maintain immune balance and prevent excessive immune responses in the human body
• major histocompatibility complex🔊nouna set of genes that help the immune system recognize and respond to foreign substances in the body by presenting them to immune cells for identification
• macrophage🔊nouna type of white blood cell that engulfs and destroys foreign substances, pathogens, and cellular debris in the body
• phagocyte🔊nouna type of immune cell in the human body that engulfs and eliminates pathogens and foreign particles through the process of phagocytosis
• mast cell🔊nouna type of immune cell that releases chemical mediators involved in allergic reactions
• neutrophil🔊nouna type of white blood cell that helps defend the body against bacterial infections by engulfing and destroying bacteria
• leukocyte🔊nouna key component of the immune system responsible for defending the body against infections and diseases
• myeloid-derived suppressor cell🔊nouna type of immune cell that has the ability to suppress immune responses, and they are often associated with pathological conditions such as cancer and inflammation
• eosinophil🔊nouna specialized type of white blood cell found in the human body
• natural killer cell🔊nouna type of immune cell that is capable of recognizing and destroying infected or cancerous cells in the body without prior sensitization or activation
• adenoid🔊noun(usually plural) each of the pair of large lymphoid tissues high up in the throat and behind the nose that have to be removed if swollen
• tonsil🔊noun(anatomy) each of the pair of lymphoid tissues in the pharynx at the side of the tongue root
• spleen🔊noun(anatomy) an abdominal organ that controls the quality of the blood cells
• lymph node🔊nouna small organ in the lymphatic system that filters and traps foreign substances, helping to fight infections and support immune responses
• macrocyte🔊nounan abnormally large red blood cell found in the bloodstream
• microcyte🔊nounan abnormally small red blood cell that can indicate certain types of anemia or underlying health conditions
• reticulocyte🔊nounan immature form of a red blood cell that indicates active blood cell production in the bone marrow
• poikilocyte🔊nounan abnormally shaped red blood cell that deviates from the normal biconcave disc shape, often seen in certain blood disorders or pathologies

The Circulatory System64 words

• artery🔊nounany blood vessel, carrying the blood to different organs of body from the heart
• arteriole🔊nouna small blood vessel that connects arteries to capillaries, regulating blood flow and blood pressure in the body
• blood🔊nounthe red liquid that the heart pumps through the body, carrying oxygen to and carbon dioxide from the tissues
• blood vessel🔊nounany tube structure inside the body through which blood can circulate, such as a vein, artery, etc.
• capillary🔊noun(anatomy) any of the small and thin-walled branching blood vessels that connect the arterioles and venules
• capillary artery🔊nouna small blood vessel that connects larger arteries to capillaries, facilitating the exchange of oxygen, nutrients, and waste products in the body
• venule🔊nouna small blood vessel that carries deoxygenated blood from capillaries to larger veins
• aorta🔊nounthe main artery that carries highly oxygenated blood from the heart, which has circulated through the lungs, to the rest of the body
• red blood cell🔊nounone of the many cells of red color carrying oxygen in the body
• median cubital vein🔊nouna forearm vein often used for blood draws and IV catheter insertion
• ulnar artery🔊nouna major blood vessel that supplies oxygenated blood to the forearm and hand
• radial artery🔊nouna major blood vessel in the forearm that delivers oxygenated blood to the hand and fingers
• pulmonary artery🔊nounthe blood vessel that transports deoxygenated blood from the heart to the lungs for oxygenation
• pulmonary vein🔊nounany of four blood vessels responsible for transporting oxygen-rich blood from the lungs back to the heart
• celiac trunk🔊nouna major artery that supplies oxygenated blood to the abdominal organs
• hepatic vein🔊nouna blood vessel that carries deoxygenated blood from the liver to the inferior vena cava
• renal vein🔊nouna blood vessel that carries deoxygenated blood from the kidneys to the heart
• renal artery🔊nouna blood vessel that carries oxygenated blood from the heart to the kidneys
• gonadal vein🔊nouna vein that drains blood from the gonads (ovaries in females or testes in males) and carries it back to the heart
• gonadal artery🔊nounan artery that supplies blood to the gonads (ovaries in females or testes in males) in order to support their normal function
• common iliac artery🔊nouna large blood vessel that arises from the abdominal aorta and branches into the left and right iliac arteries
• common iliac vein🔊nouna large blood vessel that carries deoxygenated blood from the lower limbs, pelvis, and abdominal organs back to the heart
• external iliac artery🔊nouna major blood vessel that supplies oxygenated blood to the lower extremities of the body
• external iliac vein🔊nouna major blood vessel that carries deoxygenated blood from the lower extremities back to the heart
• internal iliac artery🔊nouna major blood vessel that supplies oxygenated blood to the pelvic region and its surrounding structures in the human body
• internal iliac vein🔊nouna major blood vessel that carries deoxygenated blood from the pelvis and its surrounding structures back to the heart
• basilar artery🔊nouna major blood vessel in the human body that supplies oxygenated blood to the brainstem and posterior regions of the brain
• internal carotid artery🔊nouna vital blood vessel that delivers oxygenated blood to the brain and is located in the neck
• external carotid artery🔊nouna vital blood vessel in the neck that delivers oxygenated blood to structures outside the skull
• external jugular vein🔊nouna major superficial vein in the neck that drains blood from the scalp and face
• internal jugular vein🔊nouna major vein in the neck that carries deoxygenated blood from the brain, face, and neck back to the heart
• vertebral artery🔊nouna blood vessel that supplies oxygenated blood to the brain and spinal cord through the vertebrae of the neck
• common carotid artery🔊nouna major blood vessel that supplies oxygenated blood to the head and neck regions of the human body
• subclavian artery🔊nouna major blood vessel that supplies oxygenated blood to the upper body, including the arms, neck, and chest
• subclavian vein🔊nouna large blood vessel that collects deoxygenated blood from the upper body and carries it back to the heart
• cephalic vein🔊nounan arm vein located near the surface of the skin, responsible for draining blood from the hand, forearm, and lateral aspects of the arm
• axillary artery🔊nouna major blood vessel that supplies the upper arm and shoulder region
• axillary vein🔊nouna major vein located in the armpit region that drains deoxygenated blood from the upper limb and returns it to the heart
• superior vena cava🔊nouna large vein that transports deoxygenated blood from the upper body to the heart
• inferior vena cava🔊nouna large vein that carries deoxygenated blood from the lower body to the heart
• descending aorta🔊nounhe portion of the main artery that carries oxygenated blood from the heart to the lower body
• brachial artery🔊nouna blood vessel in the upper arm that carries oxygenated blood to the muscles and tissues of the arm
• basilic vein🔊nouna large vein located in the arm that carries deoxygenated blood from the hand to the axillary vein
• platelet🔊nouna small, cell-like structure in the blood that helps in clotting and preventing excessive bleeding
• great saphenous vein🔊nouna major superficial vein in the leg responsible for returning deoxygenated blood from the lower extremities to the heart
• small saphenous vein🔊nouna superficial vein located in the lower leg that plays a role in returning blood from the foot and lateral aspect of the leg back to the heart
• femoral artery🔊nouna major blood vessel that carries oxygenated blood from the heart to the lower limb
• femoral vein🔊nouna major blood vessel that carries oxygenated blood from the heart to the lower limb
• popliteal artery🔊nounthe major artery located behind the knee that supplies blood to the lower leg and foot
• popliteal vein🔊nouna major vein located behind the knee that carries deoxygenated blood from the lower leg back to the heart
• anterior tibial artery🔊nounan artery that supplies blood to the front of the leg and foot, and is a branch of the popliteal artery located behind the knee
• posterior tibial artery🔊nounan artery that supplies blood to the posterior (back) part of the leg and foot, and is one of the two main branches of the popliteal artery located behind the knee
• peroneal vein🔊nouna blood vessel in the lower leg that carries deoxygenated blood from the lateral side of the leg back to the heart
• peroneal artery🔊nounan artery that supplies blood to the lateral (outer) part of the leg and foot, and is one of the two main branches of the popliteal artery located behind the knee
• anterior tibial vein🔊nouna vein that accompanies the anterior tibial artery and helps to drain blood from the front of the leg and foot, and carries it back towards the heart
• arcuate artery🔊nouna small blood vessel in the kidneys that supplies oxygenated blood to the renal cortex
• posterior tibial vein🔊nouna vein that accompanies the posterior tibial artery and helps to drain blood from the back of the leg and foot, and carries it back towards the heart
• dorsal venous arch🔊nouna foot vein that collects blood from the toes and top of the foot, serving as a drainage point for venous blood returning from the foot
• lymph vessel🔊nouna thin-walled tube that carries lymph, a clear fluid containing immune cells and waste products
• episcleral veins🔊nouna network of small blood vessels that reside in the outermost layer of the eye
• digital artery🔊nouna small blood vessel that supplies oxygenated blood to the tissues of the fingers and toes
• elastic artery🔊nouna large artery that stretches and recoils to accommodate blood flow from the heart, helping to maintain blood pressure
• muscular artery🔊nouna type of artery that has thick walls composed of smooth muscle, allowing it to regulate blood flow to specific organs or tissues
• erythrocyte🔊nouna specialized blood cell responsible for transporting oxygen and carbon dioxide throughout the body

The Heart11 words

• right atrium🔊nouna heart chamber that receives deoxygenated blood from the body and pumps it to the right ventricle
• right ventricle🔊nouna heart chamber that receives deoxygenated blood from the right atrium and pumps it to the lungs for oxygenation
• left atrium🔊nouna heart chamber that receives oxygenated blood from the lungs and sends it to the left ventricle
• left ventricle🔊nounthe heart chamber that receives oxygenated blood from the left atrium and pumps it into the aorta to be distributed throughout the body
• tricuspid valve🔊nouna heart valve consisting of three leaflets that regulates blood flow between the right atrium and right ventricle
• pulmonary valve🔊nouna heart valve that allows blood to flow from the right ventricle to the pulmonary artery
• mitral valve🔊nouna heart valve between the left atrium and left ventricle that regulates blood flow by opening and closing its two leaflets
• aortic valve🔊nouna heart valve that regulates the flow of blood from the left ventricle to the aorta, the largest artery in the body
• epicardium🔊nounthe outermost layer of the heart, providing protection and lubrication to facilitate its smooth functioning
• myocardium🔊nounthe muscular layer of the heart responsible for its contraction and pumping action
• endocardium🔊nounthe thin layer of tissue that lines the inside of the heart chambers and valves

The Digestive System35 words

• throat🔊nouna passage in the neck through which food and air pass
• pharynx🔊noun(anatomy) the passage in the throat that connects the mouth to the gullet
• bile🔊nouna greenish-brown alkaline fluid that is produced by the liver in order to help the body digest fats
• small intestine🔊nouna long, tubular organ in the digestive system responsible for nutrient absorption from food
• intestine🔊nouna long, continuous tube in the body through which the food coming from the stomach moves and is passed
• esophagus🔊nouna muscular tube that connects the throat to the stomach, allowing for the passage of food and liquids during digestion
• bile duct🔊nounthe tube that carries bile from the liver or the gall bladder to the first segment of the small intestine, also known as duodenum
• gullet🔊nounthe duct through which food is passed from the throat to the stomach
• gallbladder🔊nouna small, pear-shaped organ located beneath the liver in which the body stores a strong digestive fluid produced by the liver
• pancreas🔊nouna large gland in the body that produces insulin and glucagon and substances that help the body digest food
• rectum🔊nounthe final part of the large intestine where waste is collected before being passed through the anus
• duodenum🔊nounthe initial segment of the small intestine that receives partially digested food from the stomach for further digestion
• ascending colon🔊nounthe segment of the colon that travels vertically along the right side of the abdominal cavity
• descending colon🔊nounthe segment of the large intestine that travels downward on the left side of the abdomen
• transverse colon🔊nounthe section of the large intestine that extends horizontally across the abdomen, connecting the ascending and descending colons
• cecum🔊nounthe first part of the large intestine, located in the lower right abdomen
• sigmoid colon🔊nounthe curved segment of the large intestine that links the descending colon to the rectum, forming an "S" shape in the human body
• jejunum🔊nounthe middle section of the small intestine, located between the duodenum and the ileum
• hepatic flexure🔊nouna sharp bend in the colon located in the upper-right quadrant of the abdomen where the ascending colon meets the transverse colon
• splenic flexure🔊nouna sharp bend in the colon located in the upper-left quadrant of the abdomen where the transverse colon meets the descending colon
• ileum🔊nounthe final segment of the small intestine that connects to the large intestine in the human body
• pancreatic duct🔊nouna duct that carries digestive enzymes from the pancreas to the small intestine for the breakdown and absorption of food
• common bile duct🔊nouna duct that transports bile from the liver and gallbladder to the small intestine for digestion and absorption of fats
• anus🔊nouna hole at the end of an animal or human's body from which the faeces leaves the body
• anal canal🔊nounthe terminal portion of the large intestine that extends from the rectum to the anus and is responsible for the passage of fecal matter during defecation
• alimentary canal🔊nounthe tube-like structure in the human body through which food passes, extending from the mouth to the anus
• bladder🔊nouna sac-like organ inside the body where urine is stored before being passed
• urethra🔊noun(anatomy) the tube in most mammals that carries urine out of the body, which also carries sperm in males
• ureter🔊nouna narrow tube that transports urine from the kidneys to the urinary bladder in the human body
• renal pelvis🔊nounthe central collecting region of the kidney where urine from the renal calyces is gathered before it travels to the ureter
• renal cortex🔊nounthe outermost layer of the kidney that houses the functional units responsible for urine production and filtration
• renal medulla🔊nounthe inner part of the kidney that produces urine and regulates water and electrolyte balance
• pepsin🔊nounan enzyme produced in the stomach that helps in the digestion of proteins by breaking them down into smaller peptides
• villus🔊nouna microscopic, finger-like structure found in the lining of the small intestine, responsible for enhancing the absorption of nutrients into the bloodstream
• saliva🔊nounthe liquid produced in the mouth to make chewing and swallowing easier and to prepare food for digestion

The Respiratory System19 words

• lung🔊nouneach of the two organs in the chest that helps one breathe
• larynx🔊noun(anatomy) the hollow organ in the throat that contains the vocal cords and provides an air passage to the lungs
• trachea🔊noun(anatomy) the membranous tube in the body that carries air from the throat to the bronchi
• windpipe🔊nounthe passage with ringed cartilages in the respiratory system that carries air from the throat to the lungs
• midriff🔊nounthe central area of the human torso, typically encompassing the abdomen and waist region
• epiglottis🔊nouna flap-like structure that prevents food and liquids from entering the windpipe during swallowing
• bronchiole🔊nouna small airway in the respiratory system that leads from the bronchi to the alveoli in the lungs
• bronchus🔊nouna major airway in the respiratory system that branches off from the trachea and leads to the lungsea
• pleura🔊nouna thin membrane that lines the lungs and the inner surface of the chest cavity, providing a protective covering
• pleural space🔊nounthe fluid-filled region between the visceral and parietal layers of the pleura that facilitates lung movement
• thyroid cartilage🔊nouna prominent, shield-shaped structure in the neck that protects the larynx and aids in sound production
• cricoid cartilage🔊nouna ring-shaped structure in the neck that supports the trachea and aids in the regulation of airflow during breathing
• vocal folds🔊nounthin muscular bands in the larynx that vibrate to produce sound during speech and singing
• vocal cords🔊nounelastic bands of tissue located within the larynx that vibrate to produce sound during speech and singing
• tracheal bifurcation🔊nounthe point in the trachea, or windpipe, where it divides into two smaller branches called the left and right main bronchi, which then lead to the respective lungs, facilitating the flow of air during breathing
• alveoli🔊nounsmall, air-filled sacs in the lungs where oxygen and carbon dioxide are exchanged between the air and bloodstream during respiration
• vestibular fold🔊nouna pair of mucous membrane folds in the larynx that help protect the airway and assist in sound modulation
• alveolar duct🔊nouna small airway in the lungs that connects respiratory bronchioles to alveolar sacs, facilitating the exchange of oxygen and carbon dioxide in the alveoli
• bronchial tube🔊nouna passage in the respiratory system that carries air from the trachea into the lungs

The Reproductive System33 words

• penis🔊nounthe male erectile sex organ that is used for urinating or copulation
• testicle🔊nouneach of the pair of oval reproductive organs that produce sperm, enclosed in a sack of skin, in the male body
• scrotum🔊nouna pouch of skin that houses the testicles in the male reproductive system
• vas deferens🔊nouna long, narrow tube that transports sperm from the epididymis to the urethra in the male reproductive system
• epididymis🔊nouna tightly coiled tube that stores and transports mature sperm in the male reproductive system
• semen🔊nouna fluid containing sperm and various secretions from the male reproductive organs, ejaculated during sexual intercourse for the purpose of fertilization
• sperm cell🔊nouna small, specialized reproductive cell in the male body that fertilizes the female egg during sexual reproduction
• prostate🔊nouna gland in the male body that produces fluid for semen and surrounds the urethra, aiding in urine control
• phallus🔊nounthe external reproductive organ in males, commonly known as the penis
• seminal fluid🔊nounthe fluid that is produced by the male reproductive system, containing sperm cells and various substances
• ejaculatory duct🔊nouna short duct that connects the vas deferens and the urethra, serving as a conduit for seminal fluid during ejaculation
• cervix🔊noun(anatomy) the narrow outer opening of the womb or uterus of a female
• ovary🔊nouneither of the two organs in women or female animals that produce eggs for reproduction
• uterus🔊noun(anatomy) the organ in the female body where the fetus is conceived and grown before being born
• vagina🔊noun(anatomy) the muscular passage in the female body between the outer sex organs and the uterus
• clitoris🔊noun(anatomy) a small erectile part of the female genitalia that becomes larger when sexually stimulated
• hymen🔊nouna thin membrane located at the entrance of the vagina, often associated with female virginity, but its presence and appearance vary among individuals
• vulva🔊nounthe external female genitalia, including the labia, clitoris, vaginal opening, and urethral opening
• labia majora🔊nounthe two outer, larger folds of skin and tissue that enclose and protect the vaginal opening in the female genitalia
• labia minora🔊nounthe inner, smaller folds of skin and tissue within the female genitalia that surround the vaginal opening and the clitoral hood
• introitus🔊nounthe entrance or opening of a body cavity, particularly the vaginal opening
• fallopian tube🔊nouna slender tube connecting the ovary to the uterus in the female reproductive system
• womb🔊nounthe part of the body of a woman or female mammal where the baby develops before birth
• oviduct🔊noun(anatomy) each of the pair of tubes in the female body through which eggs pass to the ovary
• pudendum🔊nounthe external genitalia of the female reproductive system, encompassing the labia, clitoris, vaginal opening, and urethral opening
• glans🔊nounthe rounded, sensitive tip or head of the penis or clitoris
• genitals🔊nounthe external sex organs of the body
• gamete🔊nouna special cell used for reproduction, with sperm cells being the male gametes and egg cells being the female gametes
• sex cell🔊nouna specialized reproductive cell carrying half the genetic material of an individual
• sex organ🔊nouna specialized anatomical structure involved in sexual reproduction and the expression of sexual characteristics
• prepuce🔊nounthe foreskin, is a retractable fold of skin that covers the tip of the penis in males and the clitoral hood in females
• seminal duct🔊nouna long, muscular tube that transports sperm from the epididymis to the ejaculatory duct in the male reproductive system
• placenta🔊nounan organ in the womb that supplies the baby with nutrients and oxygen during pregnancy

Limbs21 words

• wrist🔊nounthe joint connecting the hand to the arm
• big toe🔊nounthe largest of the toes on the foot
• toenail🔊nounthe hard smooth part covering the end of each toe
• finger🔊nouneach of the long thin parts that are connected to our hands, sometimes the thumb is not included
• fingernail🔊nounthe hard smooth part at the end of each finger
• fingertip🔊nounthe area at the end of a finger
• first finger🔊nounthe finger that is next to the thumb; the second digit of the human hand
• fist🔊nounthe hand with the fingers tightly bent toward the palm
• forefinger🔊nounthe finger that is next to the thumb; the second digit of the human hand
• index finger🔊nounthe finger that is next to the thumb; the second digit of the human hand
• instep🔊nounthe raised top part of the foot between the ankle and toes
• knuckle🔊nouna rounded joint where the fingers can bend or are joined to the hand
• little finger🔊nounthe smallest finger of the hand; the fifth digit of the hand
• middle finger🔊nounthe longest finger of the hand; the third digit of the human hand
• nail bed🔊nouna layer of cells upon which the fingernail or toenail lies
• pinky🔊nounthe little finger of one's hand
• ring finger🔊nounthe finger next to the little finger, especially on the left hand; the fourth digit of the human hand
• thumb🔊nounthe thick finger that has a different position than the other four
• armpit🔊nounthe part under the shoulder that is hollow
• elbow🔊nounthe joint where the upper and lower parts of the arm bend
• forearm🔊nounthe lower part of the arm, between the elbow and the wrist

External Body Parts9 words

• belly🔊nounthe front part of the body below the ribs that contains the stomach, intestines, etc.
• belly button🔊nounthe small round hole in the front of a human stomach
• cleavage🔊nounthe space that separates a woman's breasts
• navel🔊nounthe elevated or empty part in the middle of the stomach, made by cutting the umbilical cord just after birth
• Adam's apple🔊nounthe swollen part of the neck, particularly in men, that moves upward and downward when talking or swallowing something
• buttock🔊nouneither of the two fleshy rounded parts of the human body located at the lower end of the torso
• crotch🔊nounthe part of the body between the legs that includes the genitals
• midriff🔊nounthe central area of the human torso, typically encompassing the abdomen and waist region
• limb🔊nounan arm or a leg of a person or any four-legged animal, or a wing of any bird

The Skin19 words

• epidermis🔊noun(anatomy) the outer layer of the skin that overlays the dermis
• dermis🔊nounthe layer of skin beneath the epidermis, containing blood vessels, nerves, and connective tissue
• hypodermis🔊nounthe deepest layer of the skin that contains fat cells, blood vessels, and nerves
• stratum spinosum🔊nouna layer of the epidermis (outermost layer of the skin) composed of keratinocytes that play a role in the skin's barrier function and provide structural support to the skin
• stratum granulosum🔊nouna layer of the epidermis characterized by granular cells that produce keratin
• stratum lucidum🔊nouna translucent layer of the epidermis found in thick skin regions of the body
• stratum corneum🔊nounthe outermost layer of the skin consisting of dead cells forming a protective barrier
• papillary dermis🔊nounthe top layer of the skin's second layer (dermis) and contains blood vessels, nerves, and connective tissue, contributing to the skin's structure and sensitivity to touch
• reticular dermis🔊nounthe bottom layer of the skin's dermis that gives the skin strength, elasticity, and contains structures like sweat glands, hair follicles, and blood vessels
• sweat duct🔊nouna small tubular structure that carries sweat from the sweat glands to the skin's surface
• keratinocyte🔊nouna type of skin cell that produces the protein keratin, which is an important component of the epidermis (outermost layer of the skin)
• melanocyte🔊nouna skin cell responsible for producing melanin, the pigment that determines skin, hair, and eye color
• langerhans cell🔊nouna type of immune cell found in the skin's epidermis that plays a role in defending against foreign substances and pathogens, helping to regulate the immune response in the skin
• Merkel cell🔊nouna specialized cell found in the skin's epidermis that is involved in the perception of touch and pressure, serving as sensory receptors
• hair follicle🔊nouna small structure in the skin that produces and supports the growth of hair
• subcutaneous fat🔊nounthe layer of fat beneath the skin that provides insulation, cushioning, and energy storage in the body
• cuticle🔊nouna layer of dead skin at the base of a fingernail or toenail
• foreskin🔊nouna protective fold of skin that covers the glans of the penis in males or the clitoral hood in females
• scalp🔊nounthe skin under one's hair, covering the head

The Head8 words

• brow🔊nounthe part in someone's face that is below the hair and above the eyes
• cheek🔊nounany of the two soft sides of our face that are bellow our eyes
• dimple🔊nouna small hollow place in the flesh, especially one that forms in the cheeks when one smiles
• chin🔊nounthe lowest part of our face that is below our mouth
• eyebrow🔊nounone of the two lines of hair that grow above one's eyes
• forehead🔊nounthe part of the face above the eyebrows and below the hair
• lantern jaw🔊nouna long thin jaw with a large chin
• nose🔊nounthe body part that is in the middle of our face and we use to smell and breathe

The Eye21 words

• choroid🔊nouna vascular layer of tissue in the eye, located between the retina and the sclera
• ciliary body🔊noun(anatomy) the structure that encloses the inner surface of the eye which consists of the muscle which makes the eye move
• cornea🔊noun(anatomy) the transparent layer that covers the outside of the eyeball
• fovea🔊nouna small pit in the center of the retina that is responsible for sharp central vision
• macula🔊nouna specialized area in the retina that provides central vision and sharp visual acuity
• retina🔊noun(anatomy) the sensory membrane at the back of the eye that transmits light signals to the brain through optic nerves
• sclera🔊nounthe tough, outer layer of the eye that helps protect and maintain the shape of the eyeball
• vitreous humor🔊nounthe clear, gel-like substance that fills the space between the lens and the retina in the eye
• tear duct🔊nounany of the several small canals through which tears pass from the tear gland to the eye or from the eye to the nose
• eyeball🔊nounthe whole structure of the eye
• eyelash🔊nounany of the short hairs that grow along the edges of the eyelids
• eyelid🔊nouneither of the upper or lower folds of skin that cover the eye when closed
• optic disc🔊nouna small, round area on the retina where the optic nerve enters the eye
• rod cell🔊nouna specialized photoreceptor cell found in the retina of the eye that is responsible for vision in low-light conditions
• cone cell🔊nouna specialized photoreceptor in the retina of the eye responsible for color vision and high visual acuity in bright light conditions
• aqueous humor🔊nouna transparent fluid in the eye that nourishes and maintains the shape of the anterior chamber
• anterior chamber🔊nounthe front part of the eye that contains clear fluid (aqueous humor), located between the cornea and the iris, helping to maintain the eye's shape and pressure
• posterior chamber🔊nounthe back part of the eye that contains clear fluid (aqueous humor), located between the iris and the lens, helping to maintain the eye's shape and pressure
• conjunctiva🔊nouna thin, transparent membrane that covers the front surface of the eye and the inner surface of the eyelids
• ora serrata🔊nounthe jagged edge of the retina in the eye where it transitions to the ciliary body, marking the end of the retina's visual capabilities
• schlemm's canal🔊nouna specialized vessel in the eye responsible for draining the fluid from the anterior chamber

The Ear23 words

• antihelix🔊nouna part of the external ear's cartilage structure that runs parallel to the helix and is located on the inner side of the ear
• antitragus🔊nouna small protuberance of cartilage located opposite to the tragus on the inner side of the external ear
• tragus🔊nouna small, triangular projection of cartilage located in front of the ear canal, partially covering its entrance
• ear canal🔊nounthe passage through which sound is carried from the outer ear to the tympanic membrane
• lobule🔊nounthe soft, fleshy lower part of the external ear, often referred to as the earlobe
• middle ear🔊nounthe air-filled space behind the eardrum that contains the three small bones
• malleus🔊nounthe small hammer-shaped bone in the middle ear that transmits sound vibrations from the eardrum to the inner ear
• eardrum🔊nouna thin piece of skin in the middle ear that vibrates by sound waves and enables one to hear sounds, also known as tympanic membrane
• incus🔊nouna small bone in the middle ear that helps transmit sound vibrations from the eardrum to the inner ear
• stapes🔊nouna small bone in the human middle ear that transmits sound vibrations from the incus to the inner ear
• cochlea🔊noun(anatomy) a spiral cavity in the inner ear that contains sensory organs which send nerve signals to the brain in response to vibrations
• earlobe🔊nounthe soft fleshy part of the external ear
• outer ear🔊nounthe visible part of the ear, including the pinna and the ear canal
• inner ear🔊nounthe sensory organ responsible for hearing and balance located within the skull
• vestibular duct🔊nounone of the three fluid-filled ducts in the inner ear that plays a role in hearing and is located above the cochlear duct
• tympanic duct🔊nounone of the three fluid-filled ducts in the inner ear that plays a role in hearing and is located below the cochlear duct
• Eustachian tube🔊nouna small passageway that connects the middle ear to the back of the throat, helping to equalize air pressure
• semicircular canal🔊nouna fluid-filled structure in the inner ear that detects rotational movements and helps maintain balance
• utricle🔊nouna small, fluid-filled sac in the inner ear that helps detect changes in head position and linear acceleration
• ampulla🔊nounthe expanded region within the semicircular canals of the inner ear
• cochlear duct🔊nouna fluid-filled duct in the inner ear responsible for hearing, housing the organ of Corti which converts sound waves into nerve signals
• saccule🔊nouna small membranous sac located in the inner ear that is responsible for detecting changes in linear acceleration and head position
• round window🔊nouna membrane-covered opening located in the inner ear

The Nose15 words

• nostril🔊nouneither of the two external openings of the nose that one breathes through
• turbinate🔊nouna bony structure inside the nasal cavity that helps filter, humidify, and regulate airflow
• frontal sinus🔊nouna hollow space within the frontal bone of the skull that is filled with air
• ethmoidal sinus🔊nouna group of small, air-filled cavities located within the ethmoid bone of the skull
• maxillary sinus🔊nouna paired cavity within the maxillary bone of the skull, responsible for producing mucus
• sphenoid sinus🔊nounan air-filled cavity in the skull that plays a role in the respiratory system and is located within the sphenoid bone
• nasion🔊nounthe anatomical point where the frontal bone and nasal bones meet on the human skull
• rhinion🔊nounthe most anterior point or tip of the nasal bridge
• dorsum nasi🔊nounthe upper part of the nose, specifically the bony and cartilaginous area that forms the bridge of the nose
• nasal meatus🔊nouna narrow passageway within the nasal cavity that helps to warm, humidify, and filter the inhaled air
• inferior meatus🔊nouna narrow passageway in the nasal cavity that aids in the drainage of the nasal passages
• middle meatus🔊nouna part of the nasal cavity that helps with drainage and airflow in the nasal passages, located between the inferior and superior meatuses
• sphenoethmoidal recess🔊nouna small area in the nasal cavity where the sphenoid and ethmoid sinuses meet and play a role in drainage and ventilation
• nasal cavity🔊nouna hollow space in the nose that serves as a passage for air, helps filter and humidify inhaled air, and houses the sense of smell
• nasal ala🔊nounthe outer, fleshy part of the nostril that helps regulate airflow and contributes to the shape of the nose

The Mouth and Teeth16 words

• palate🔊noun(anatomy) the inside upper side of the mouth that separates it from the nasal cavity
• soft palate🔊nouna flexible muscular structure located at the back of the roof of the mouth
• uvula🔊noun(anatomy) the soft fleshy part at the back of the soft palate that hangs just above the pharynx
• hard palate🔊nounthe bony structure in the roof of the mouth that separates the oral and nasal cavities
• baby tooth🔊nounany of the temporary teeth in young children that falls out and is later replaced with a permanent one
• incisor🔊noun(anatomy) any of the eight narrow-edged teeth at the front of the mouth that are used for biting
• milk tooth🔊nouna temporary tooth in young children that drops out and is later replaced with a permanent one
• molar🔊nounone of the large flat teeth at the back of the mouth used for grinding and crushing food
• premolar🔊nouna tooth that is located between the canine and molar teeth
• cingulum🔊nouna rounded ridge or prominence found on the lingual surface of anterior teeth near the cervical third
• tooth🔊nounone of the things in our mouth that are hard and white and we use to chew and bite food with
• bicuspid🔊nouna tooth located between the canine and molar teeth
• dentin🔊nouna hard, calcified tissue beneath the enamel and cementum of a tooth
• root canal🔊nouna dental procedure to remove infected or damaged pulp from a tooth's root canal system
• wisdom tooth🔊nounthe third and final set of molars that typically emerge in the back of the mouth during early adulthood
• oral cavity🔊nounthe hollow space in the mouth that includes the lips, teeth, tongue, gums, and the hard and soft palates

General Words Related to the Body32 words

• orifice🔊nouna hole or external opening in the body, such as an ear canal or the anus
• torso🔊nounthe upper part of the human body, excluding the arms and the head
• nervous system🔊nounthe network of neurons and fibers that interpret stimuli and transmit impulses from the body to the brain
• hormone🔊nouna chemical substance produced in the body of living things influencing growth and affecting the functionality of cells or tissues
• bone marrow🔊nounthe soft substance that fills the cavities of bones, which is either yellowish and consists of fat cells or reddish and makes blood cells
• mucus🔊nouna thick slimy substance produced by mucous membranes, inside the nose or the mouth, to lubricate and protect them
• mucus membrane🔊nouna thin, moist tissue that lines body cavities like the respiratory, digestive, and reproductive tracts, producing mucus for protection and lubrication
• phlegm🔊nounthe thick mucus that is formed in the nasal and throat cavities, usually secreted in excessive amounts as a result of common cold
• lymphatic system🔊nouna network that collects and transports lymph, supporting immune function and fluid balance
• bloodstream🔊nounthe flowing blood in a circulatory system, moving through vessels to transport oxygen, nutrients, and waste products throughout the body
• metabolism🔊nounthe chemical processes through which food is changed into energy for the body to use
• breath🔊nounthe air taken into or sent out from the lungs
• breathing🔊nounthe action of taking air into the lungs and sending it out again
• inhalation🔊nounthe intake of air or a substance into the lungs through the process of breathing
• airway🔊nounthe anatomical structures, including the nose, mouth, throat, and lungs, that allow for the passage of air during breathing
• hilum🔊nounthe entrance or exit point on an organ where blood vessels, nerves, and other structures are connected
• membrane🔊nouna thin sheet of tissue that separates or covers the inner parts of an organism
• gastrointestinal tract🔊nounthe long, hollow organ system that extends from the mouth to the anus
• dorsum🔊nounthe upper or posterior surface of a body
• duodenal🔊adjectiveaffecting or relating to the top part of the small intestine, called duodenum
• intestinal🔊adjectiverelating to the intestines, which are part of the digestive system responsible for absorbing nutrients and removing waste from the body
• pancreatic🔊adjectiverelating to the organ that controls blood sugar, called pancreas
• pelvic🔊adjective(anatomy) connected with the curved set of bones at the bottom of the body, called pelvis
• physically🔊adverbin relation to the body as opposed to the mind
• renal🔊adjectiverelating to the kidneys or their function
• retinal🔊adjective(anatomy) connected with the sensory part of the eye that sends signals to the brain, called retina
• spinal🔊adjectiverelating to or forming the spine
• uterine🔊adjectiverelating to the uterus, the organ in the female reproductive system where fetal development occurs during pregnancy
• vertebral🔊adjective(anatomy) related to any of the series of the bones from the back, called vertebra
• cranial🔊adjectiverelating to the skull or the part of the body enclosing the brain
• metabolize🔊verbto break down substances like food or drugs to produce energy or support various bodily functions
• temporal🔊adjectiveassociated with or located in the region of the temples, which are the sides of the head above the ears

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