Describe Double Circulation in Human Beings Double circulation has two components, pulmonary circulation and systemic circulation.Pulmonary Circulation : It is movement of blood from heart to the lungs and back. Deoxygenated blood of the body enters the righ auricle, passes into righ ventricle which pumps it into pulmonary arch, With the help of two separate … [Read more...] about Describe Double Circulation in Human Beings