attaches_to constitutional_part_of regional_part_of Posterior leaflet of mitral valve Lateral papillary muscle of left ventricle Myocardium of mid zone of left ventricle Myocardial zone 10 Region of lateral papillary muscle of left ventricle Posterior head of lateral papillary muscle of left ventricle FMA:86569 Region of lateral papillary muscle of left ventricle which is attached to the posterior leaflet of mitral valve through the chorda tendinea of left ventricle and to the inferior wall of left ventricle. fma Inferior wall of left ventricle