Question

Describe double circulation in human beings. Why it is necessary?​

Answer 1

The deoxygenated blood is pumped by the right ventricle into the lungs for oxygenation. It is necessary for a human being to separate oxygenated and de-oxygenated blood because this makes their circulatory system is more efficient and helps in maintaining constant body temperature.

Answer 2

Step-by-step explanation:

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