NEET BIOLOGY

Detailed explanation-1: -Complete answer: The thread-like tendons of papillary muscles prevent the valves of the heart from movement. By holding the flaps tightly against the strong flow of blood which are inserted upon the flaps of tricuspid and bicuspid valves that are known as chordae tendineae.

Detailed explanation-2: -The chordae tendineae (tendinous cords), known as the heart strings, are tendon-resembling fibrous cords of connective tissue. The chordae tendineae connect the atrioventricular valves to the papillary muscles within the ventricles. Multiple chordae tendineae attach to each leaflet of each flap of the valves.

Detailed explanation-3: -Structure. The chordae tendineae connect the atrioventricular valves (tricuspid and mitral), to the papillary muscles within the ventricles. Multiple chordae tendineae attach to each leaflet or cusp of the valves. Chordae tendineae contain elastin in a delicate structure notably at their periphery.

Detailed explanation-4: -Introduction: The papillary muscles (PM) play a vital role in atrioventricular (AV) valve function. The PM and their chordae tendineae (CT) regulate the closure of the AV valve during systole.

Detailed explanation-5: -The papillary muscles are muscles located in the ventricles of the heart. They attach to the cusps of the atrioventricular valves (also known as the mitral and tricuspid valves) via the chordae tendineae and contract to prevent inversion or prolapse of these valves on systole (or ventricular contraction).