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atrioventricular valve

   Also found in: Medical, Encyclopedia, Wikipedia 0.02 sec.
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Noun1.atrioventricular valve - either of two heart valves through which blood flows from the atria to the ventricles; prevents return of blood to the atrium
papillary muscle - any of several muscles associated with the atrioventricular valves; "the papillary muscles contract during systole to prevent regurgitation of blood into the atria"
bicuspid valve, left atrioventricular valve, mitral valve - valve with two cusps; situated between the left atrium and the left ventricle
right atrioventricular valve, tricuspid valve - valve with three cusps; situated between the right atrium and the right ventricle; allows blood to pass from atrium to ventricle and closes to prevent backflow when the ventricle contracts
cardiac valve, heart valve - a valve to control one-way flow of blood


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