anterior view heart anatomy medical

presentation advertising cartoon diagram drawing poster finger organ brand adult font text line nose hand face head arm left atrium pulmonary veins right superior vena cava inferior posterior interventricular sulcus coronary sinus arteries apex heart artery circumflex great cardiac vein middle ventricle interatrial septum base anterior surface diaphragmatic aorta tricuspid valve mitral aortic sinoatrial node atrioventricular bundle purkinje fibers layers function epicardium myocardium endocardium atrium veins cava sulcus sinus arteries heart artery vein ventricle septum surface aorta valve node bundle fibers function epicardium myocardium endocardium