Deoxygenated blood that has just returned to the heart, headed toward the lungs., Oxygenated blood that has just returned to the heart from the lungs., Vena Cava, Aorta, Blood flow in the upper body, Blood flow in the lower body, Oxygenated blood traveling away from the heart to the rest of the body., Blood bringing carbon dioxide back to the heart and lungs. .

Blood circulation

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