Dirty Harry2 months ago

Papillary Muscles

Probably one of the best shots of the papillary muscles and the chordae tendinae in the heart. The papillary muscles within the ventricles attach to the cusps of the atrioventricular valves via the tendinous chords. They prevent the prolapse of the mitral and tricuspid valves during ventricular systole, thus prevent regurgitation (or back flow) of the blood during back to the right or left atrium. Regurgitation can be the result of papillary dysfunction or chordate rupture, which commonly happened following an acute myocardial infarction.