Papillary Muscles

Multiple Choice

Papillary muscles:

A) contract when the ventricles relax
B) prevent the valves from closing during ventricular diastole
C) are attached to the semi lunar valves via the chordae tendineae
D) prevent the backflow of blood into the atria during ventricular systole
E) prevent the backflow of blood into the ventricles from the aorta