The blood - brain barrier is the separation of circulating blood and brain fluid in the central nervous system. (nurturenormally.com)
They lose heat by circulating blood from the broad network of blood vessel in their ears. (petsmagazine.com.sg)
Going upside down affects the body in the same way vigorous aerobic exercise does, by circulating blood down to the feet and up the back. (fivepillarsyoga.com)