Which structure is responsible for maintaining atrio-ventricular valve closure in the heart?

Question

Quizplus · Accepted Answer

The papillary muscles are located in the ventricles of the heart and are connected to the atrio-ventricular valves (mitral and tricuspid valves) via chordae tendineae. When the ventricles contract, the papillary muscles contract as well, pulling on the chordae tendineae and preventing the valves from prolapsing into the atria. Therefore, the papillary muscles are responsible for maintaining atrio-ventricular valve closure in the heart.

Which Structure Is Responsible for Maintaining Atrio-Ventricular Valve Closure in the Heart