septum - separates left and right side of heart, aorta - carries oxygenated blood AWAY from heart, vena cava - returns blood FROM the lower body to heart, pulmonary artery - carries blood from heart to the 2 lungs, pulmonary veins - carry oxygenated blood from lungs to the heart, left ventricle, right atrium, valve, pericardium - sack around the heart, vena cava - returns blood FROM the upper body to heart.

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