MRCP UK EXAMINATIONS

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: -There are two papillary muscles arising from the area between the apical and middle thirds of the left ventricular wall: the antero-lateral papillary muscle is often composed of one body or head, and the postero-medial papillary muscle usually with two bodies or heads.

Detailed explanation-3: -There are 5 papillary muscles in the heart originating from the ventricular walls. These muscles attach to the tricuspid and mitral valve leaflets via the chordae tendineae and functionally prevent regurgitation of ventricular blood via tensile strength by preventing prolapse or inversion of the valves during systole.

Detailed explanation-4: -The papillary muscles of the left ventricle (LV) are small muscular structures located within the left ventricular cavity. Although small, these muscles play an important role in the functioning of the mitral valve and the left ventricle.