anterior view: 1- right ventricle, 2- apex, 3- anterior interventricle sulcus, 4- left ventricle, 5- pulmonary trunk, 6- aortic arch, 7- right atrium, 8= left ventricle, 9- left atrium, brachiocephalic trunk, 10- common carotid artery, 11-left subclavian artery , 12- superior vena cava, 13- inferior vena cava