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Unformatted text preview: -2 ventricles (lower chambers) These four chambers act as two separate pumps right and left, performing different functions Right Atrium Receives unoxygenated blood from the superior and inferior vena cava The superior vena cava collects blood from the head and the upper body region The inferior vena cava collects blood from the lower body The blood then passes through the tricuspid valve...
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- Fall '08