<P> The pulmonary circulation is the portion of the circulatory system which carries deoxygenated blood away from the right ventricle of the heart , to the lungs , and returns oxygenated blood to the left atrium and ventricle of the heart . The term pulmonary circulation is readily paired and contrasted with the systemic circulation . The vessels of the pulmonary circulation are the pulmonary arteries and the pulmonary veins . </P>
how oxygenated blood returns to the heart from the lungs
pulmonary circulation