Question

describe double circulation in human beings ​

Answer 1

the double circulation takes place in human heart it was function by the four chambers of heart

Answer 2

Such a flow in which blood enters the heart twice is called double circulation. It helps in keeping the oxygenated and deoxygenated blood separate.The right atrium receives blood from the vena cava and pumps the blood into the right ventricle. Blood is sent to lungs, where it is oxygenated. Then, it is sent through the right and left pulmonary veins to the left atrium where it is pumped to the left ventricle. The blood then travels to the ascending aorta where it leaves the heart and delivers oxygen to different parts of the body.

Birds and mammals have double circulation because they need to maintain a constant body temperature (warm blooded animals or endotherms).