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deoxygenated blood flows through the S/I vena cava(vein) from the body into the right atrium
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then the blood flows through the tricuspid valve
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the blood then goes to the right ventricle
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the blood goes to the pulmonary valve
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the blood goes to the pulmonary artery
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then the blood goes to the lungs to pick up oxygen
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from the lungs the bloogoes back to the heart through a pulmonary vein
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the blood goes to the left atrium
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the blood goes through the bicuspip valve
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the blood then goes to the left ventrice
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the blood goes to the aortic valve then the aorta, which is an artery
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the blood is now back traveling throuh the body :)