Question

describe the double circulation in human body.why is it necessary ?

Answer 1

During a single cycle bloodgoes twice in the heart which is known as double circulation. It isnecessary in human being to separate oxygenated and de-oxygenated blood because this makes their circulatory system is more efficient and helps in maintaining constant bodytemperature.

Answer 2

Double circulation : A circulatory system in which blood makes two distinct circuits. It means blood travels two times 2 complete one circulation.