Question

explain double circulation in humans ​

Answer 1

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• In the human body, blood circulates through the heart twice.

• Once it goes through the heart during pulmonary circulation and second time during systemic circulation.

• Hence, circulation in human beings is called double circulation.

Answer 2

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➡ The human circulatory system is a double circulatory system.

➡ The heart receives deoxygenated blood from different parts of the body, and it pumps this blood to the lungs.

➡ The oxygenated blood from the lungs returns to the heart, which is pumped again into different parts of the body by the heart.

➡ Thus, the blood passes twice through the heart making one complete round through the body. This is called double circulation.