Double circulatory system Humans have a double circulatory system, which means the blood passes through the heart twice on each loop around the body.

Closed circulatory system, but fluid constituents of blood leak out of capillaries and return to the heart by the second component of the circulatory system, the lymphatic system. Considerable ...

The circulatory system is made up of a vast network of organs and blood vessels that deliver nutrients to every cell in the body.

The Circulatory System is the system of organs in the human beings and other animals which is responsible for transport of materials inside the body.