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Pathway of blood Lungs>pulmonary vein>left atrium>left ventricle>aorta (note: in Aorta the blood will be distribute into two ways, the Upper extremities>superior vena cava and Lower Extremities> inferior vena cava ) after that it will go to right atrium>right ventricle>pulmonary artery>lungs... End of the cycle. :) -You already understand? If not, ask me. ;)
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