right atrium
/ɹˈaɪt ˈætɹiəm/
noun
a heart chamber that receives deoxygenated blood from the body and pumps it to the right ventricle
"The right atrium receives deoxygenated blood."
"The right atrium receives deoxygenated blood from the body through the superior and inferior vena cava."
right ventricle
/ɹˈaɪt vˈɛntɹɪkəl/
noun
a heart chamber that receives deoxygenated blood from the right atrium and pumps it to the lungs for oxygenation
"The right ventricle pumps blood to lungs."
"The right ventricle pumps deoxygenated blood to the lungs through the pulmonary artery."
left atrium
/lˈɛft ˈætɹiəm/
noun
a heart chamber that receives oxygenated blood from the lungs and sends it to the left ventricle
"The left atrium receives oxygenated blood."
"The left atrium receives oxygenated blood from the lungs through the four pulmonary veins."
left ventricle
/lˈɛft vˈɛntɹɪkəl/
noun
the heart chamber that receives oxygenated blood from the left atrium and pumps it into the aorta to be distributed throughout the body
"The left ventricle pumps blood to the body."
"The left ventricle pumps oxygenated blood into the aorta to be distributed throughout the entire body."
tricuspid valve
/tɹˈaɪkəspˌɪd vˈælv/
noun
a heart valve consisting of three leaflets that regulates blood flow between the right atrium and right ventricle
"The tricuspid valve separates right chambers."
"The tricuspid valve separates the right atrium from the right ventricle and has three leaflets."
pulmonary valve
/pˈʌlmənˌɛɹi vˈælv/
noun
a heart valve that allows blood to flow from the right ventricle to the pulmonary artery
"The pulmonary valve opens to lung artery."
"The pulmonary valve opens to allow blood to flow from the right ventricle to the lungs and closes to prevent backflow."
mitral valve
/mˈɪtɹəl vˈælv/
noun
a heart valve between the left atrium and left ventricle that regulates blood flow by opening and closing its two leaflets
"The mitral valve separates left chambers."
"The mitral valve separates the left atrium from the left ventricle and has two leaflets."
aortic valve
/eɪˈoːɹɾɪk vˈælv/
noun
a heart valve that regulates the flow of blood from the left ventricle to the aorta, the largest artery in the body
"The aortic valve opens to aorta."
"The aortic valve opens during left ventricular contraction to allow blood into the aorta and closes during relaxation."
epicardium
/ˌɛpɪkˈɑːɹdiəm/
noun
the outermost layer of the heart, providing protection and lubrication to facilitate its smooth functioning
"The epicardium covers the heart surface."
"The epicardium is the outermost layer of the heart and is also part of the pericardium."
myocardium
/ˌmaɪəˈkɑɹdiəm/
noun
the muscular layer of the heart responsible for its contraction and pumping action
"The myocardium is the heart muscle."
"The myocardium is the thick muscular middle layer of the heart wall that contracts to pump blood."
endocardium
/ˌɛndoʊkˈɑːɹdiəm/
noun
the thin layer of tissue that lines the inside of the heart chambers and valves
"The endocardium lines heart chambers."
"The endocardium is the smooth inner lining of the heart chambers and valves preventing blood clot formation."