ANATOMY

Detailed explanation-1: -The papillary muscles of the heart are pillar-like muscles seen within the cavity of the ventricles, attached to their walls. They have an integral role in proper cardiac valvular function.

Detailed explanation-2: -The force of ventricular contraction can cause the AV valves to prolapse, or flip back into the atria, and allow blood to backflow into the atria. To prevent this, the cusps of the AV valves are attached to little tendons known as chordae tendinae. These are attached to papillary muscles in the ventricles.

Detailed explanation-3: -The anterior, posterior, and septal papillary muscles of the right ventricle each attach via chordae tendineae to the tricuspid valve. The anterolateral and posteromedial papillary muscles of the left ventricle attach via chordae tendineae to the mitral valve.

Detailed explanation-4: -The ventricular walls also have papillary muscles that support the atrioventricular valves through the chordae tendineae. The number of these muscles can vary both within and between species (3). Both ventricles may also contain cross-chamber fibrous or muscular bands that typically carry Purkinje fibers.