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glossary:mitral_valve

(1) A valve in the heart situated between the left atrium and the left ventricle that permits blood to flow from the left atrium into the left ventricle but not in the reverse direction.

The mitral valve has two flaps (cusps). It is called “mitral” because it looks like a bishop's miter or headdress. Also known as the bicuspid valve.

(2) <anatomy, cardiology> The heart valve that divides the left atrium and left ventricle. During left atrial contraction, the mitral valve opens to allow blood to flow into the left ventricle. Upon closure, the mitral valve prohibits the regurgitation of blood back into the left atrium. The mitral valve is the only heart valve that has only 2 valve cusps (all others have 3).

glossary/mitral_valve.txt · Last modified: 2012/10/16 14:40 (external edit)