chambers of the heart

advertising cartoon drawing finger organ mouth adult brand font hand nose text head face limb arm eye ear 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