In anatomy, the papillary muscles of the heart serve to limit the movements of the mitral and tricuspid valves. These muscles contract to tighten the chordae tendineae, which in turn prevent inversion. This occurs in response to pressure gradients. Instead they brace the valves against the high pressure, preventing regurgitation of ventricular blood back into the atrial cavities.
See more at Wikipedia.org...
Papillary muscle n. Any of the group of myocardial bundles that terminate in the tendinous cords that attach to the cusps of the atrioventricular [more]Papillary muscle - Community and Resources
Noun 1. any of several muscles associated with the atrioventricular valves; "the papillary muscles contract during systole to prevent regurgitation of blood into the atria" (hypernym) cardiac muscle, heart muscle (part-holonym) atrioventricular valve
Free Download Now!
