regional_part_of Myocardium of mid zone of right ventricle Myocardium of region of mid zone of right ventricle Myocardium of mid septal zone of right ventricle FMA:225398 Mid septal zone of myocardium of right ventricle Myocardium of septal region of mid zone of right ventricle Region of mid zone of myocardium of right ventricle which is continuous with the mid anterior zone, mid inferior zone, basal septal zone and apical septal zone of myocardium of right ventricle. fma