<P> the part of the circulatory system which carries blood from heart to lungs and back to heart </P> <Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (May 2017) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (May 2017) (Learn how and when to remove this template message) </Td> </Tr> <Table> <Tr> <Th_colspan="2"> Pulmonary circulation </Th> </Tr> <Tr> <Td_colspan="2"> Human pulmonary circulation . Oxygen - rich blood is shown in red; oxygen - depleted blood in blue </Td> </Tr> <Tr> <Td_colspan="2"> Pulmonary circulation in the heart </Td> </Tr> <Tr> <Th_colspan="2"> Details </Th> </Tr> <Tr> <Th> System </Th> <Td> Circulatory system </Td> </Tr> <Tr> <Td_colspan="2"> Anatomical terminology (edit on Wikidata) </Td> </Tr> </Table>

The flow of blood through the pulmonary and systemic circulations