Blood Circulation

The heart is the main organ of blood circulation. Circulating blood is always in the blood vessels. Blood circulation is called a closed circulation.
If we look at the explanation, then can we draw the conclusion that the blood circulating throughout the body. In a one-time supply, the blood through the heart twice. Circulation of blood is called double circulation. There are two kinds of dual circulation, which is as follows.
a. Large blood circulation, namely the circulation of blood that carries blood from the left ventricle throughout the body and back into the right atrium.
b. Small blood circulation, is the circulation of blood that carries blood from the right ventricle to the lungs, then returned to the foyer to the left.

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