regional_part_of Myocardium of region of mid zone of left ventricle Myocardium of mid zone of left ventricle Myocardial zone 9 FMA:86061 Mid inferoseptal zone of myocardium of left ventricle Mid zone of myocardium of left ventricle which has as its parts the cardiac muscle tissue, posteromedial head of the posterior papillary muscle of left ventricle, septal division of left branch of atrioventricular bundle and the trabecula carnea of left ventricle that is adjacent to the mid anteroseptal and the mid inferior zones of myocardium of left ventricle. Myocardium of inferoseptal region of mid zone of left ventricle Zone 9 of myocardium of left ventricle fma