Papillary muscles are associated with

Papillary muscles, located within the ventricles of the heart, are vital for proper valve function. Connected to the atrioventricular valves by chordae tendineae, they contract just before ventricular systole, preventing valve cusps from reversing into the atria. This action ensures efficient closure of the mitral and tricuspid valves during ventricular contraction, preventing backflow of blood into the atria. Thus, papillary muscles play a crucial role in maintaining unidirectional blood flow through the heart, facilitating effective circulation throughout the body.