The function of the papillary muscles is to
A) Hold valves open during ejection
B) Conduct electrical signals across the chamber
C) Push valves shut during ejection
D) Prevent prolapse of valves during ejection
E) Prevent regurgitation through the aortic valve

Question

Quizplus · Accepted Answer

Papillary muscles contract during ventricular contraction to prevent the atrioventricular valves (mitral and tricuspid valves) from inverting or prolapsing into the atria, thus preventing regurgitation of blood back into the atria during ventricular systole.

The Function of the Papillary Muscles Is to