Question

Can we say double circulation means circulation of blood in 1)the body and 2)the heart?

Answer 1

Double circulation of blood means blood is circulated in two separate pathway, one is pulmonary circulation and the other is systemic circulation. Pulmonary circulation involves the flow of blood between heart and lungs for oxygenation of blood. Systemic circulation involves the flow of blood between heart and different organs of the body for deoxygenation of blood. So, circulation of blood in body and heart is one part of double circulation.