regional_part_of Anterior interventricular branch of left coronary artery Zone of anterior interventricular branch of left coronary artery Zone 14 of anterior interventricular branch of left coronary artery Apical septal zone of anterior interventricular branch of left coronary artery FMA:86513 Zone 14 of LAD Zone of anterior interventricular branch of left coronary artery which supplies the apical septal zone of myocardium of left ventricle and is continuous with zone 13 of anterior interventricular branch of left coronary artery. fma Apical zone of anterior interventricular branch of left coronary artery