anatomy of the heart - hollow, triangular shaped, top portion is the base, lower portion is the apex, then there is the brachisophalic, superior/inferior vena cava, rigth atrium, tricuspid valve, right ventricle, pulmonary smeilunar valve, pumonary trunk/artery, pulmonary vein, left atrium, bicuspid valve, left ventricle, semilunar valve, aorta, body,