<Tr> <Td_colspan="2"> Pulmonary circulation in the heart </Td> </Tr> <Tr> <Td_colspan="2"> Anatomical terminology (edit on Wikidata) </Td> </Tr> <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> <P> A separate system known as the bronchial circulation supplies blood to the tissue of the larger airways of the lung . </P>

What if the pulmonary circulation do not work with systematic circulation