Gray's Fig. 493 - Interior of right side of heart.
In anatomy, the papillary muscles of the heart serve to limit the movements of the mitral and tricuspid valves and prevent them from being reverted. It is important to note they do not close or open the valves, which close passively in response to pressure gradients. Instead they brace the valves against the high pressure.
The U wave in an ECG is supposed to represent papillary muscle repolarization.
External links
The content of this page is retrieved from http://en.wikipedia.org/wiki/Papillary_muscle under GFDL
