Question

give answer immediately:

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

Answer 1

Answer:

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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.

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Answer 2

Answer:

Double Circulation of blood is the pumping of blood from the heart twice.

First the purified blood is brought from lungs to the heart and sent to other organs through Aorta.

Second , the deoxygenated blood is brought to the heart through inferior and superior venka cava and sent to lungs for purification

Therefore, the blood passes through the heart twice which is known as Double Circulation.

It is necessary so that purified oxygen reaches all the organs of the body.