The flaps of the atrioventricular (AV)valves of the heart are anchored by the:

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The flaps of the atrioventricular (AV) valves, also known as the mitral and tricuspid valves, are anchored by the chordae tendineae and papillary muscles. The chordae tendineae are fibrous cords that attach the valves to the papillary muscles, which are located in the walls of the ventricles. This arrangement helps to prevent backflow of blood into the atria during the contraction of the ventricles.

The Flaps of the Atrioventricular (AV)valves of the Heart Are