Vena cava - returns blood to the right atrium, Pulmonary artery - takes blood from the right ventricle to the lungs, Pulmonary vein - returns blood from the lungs to the left atrium, Aorta - takes blood from the left ventricle to the rest of the body, right atrium - pumps blood to the right ventricle, left atrium - pumps blood to the left ventricle, right ventricle - pumps blood to the lungs, left ventricle - pumps blood round the rest of the body, valves between atria and ventricles - prevent blood flowing backwards into the atria, valves between arteries and ventricles - prevent blood flowing backwards into the ventricles,

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