The flaps of the AV valves of the heart are anchored by the:
A)chordae tendineae and papillary muscles
B)endocardium and coronary muscles
C)chordae tendineae and coronary muscles
D)endocardium and papillary muscles

Question

Quizplus · Accepted Answer

The flaps of the AV valves are anchored by the chordae tendineae and papillary muscles. The chordae tendineae are thin cords that attach the AV valve flaps to the papillary muscles, which are small muscles located within the ventricles of the heart. When the ventricles contract, the papillary muscles tighten the chordae tendineae, which pulls on the AV valve flaps and prevents them from inverting into the atria.

The Flaps of the AV Valves of the Heart Are