Double circulation of blood through heart is nothing but the two type of circulation viz, pulmonary circulation and systemic circulation.
It is the movement of blood from heart to lungs and back to heart again.
It is one phase of the overall circulatory system.
HEART – LUNGS – HEART
It is a process in which oxygenated blood is carried from the heart to all parts of the body and deoxygenated blood is carried from all the body parts back to the heart.
It is the major part of the overall circulatory system
HEART – BODY PARTS – HEART