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2016-05-07T12:12:05+05:30
De-oxygenated blood arrives at the right atrium via the vena cava. Blood is then pumped into the right ventricle, then pumped via the pulmonary artery to the lungs where de-oxygenated blood is turned into oxygenated blood due to carbon dioxide (CO2) being exchanged for oxygen (O2).

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