Question

11. Describe double circulation of blood in human beings. Why is it necessary? in 5 points or short paragraph ​

Answer 1

Answer:

This means that during a single cycle, the blood goes twice in the heart.

Explanation:

This double circulatory system is important because it ensures provision of oxygenated blood to the muscle and not a mixture of oxygenated and de-oxygenated blood. Hence, this system ensures efficient supply of oxygenated blood to the muscles.

Answer 2

Answer:

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.