How the blood circulates?

Answer 1

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Answer 2

Blood is circulated around the body by the heart through a system of blood vessels, forming the cardiovascular system. There are 3 kinds of blood vessels: arteries carry blood away from the heart to body; veins carry blood from the body to the heart; and capillaries carry blood in between tissues. The four-chambered heart acts as a pump and is the centre of the circulatory system. There are 3 main circulations: pulmonary circulation is the movement of blood between the heart and the lungs; coronary circulation the supply of blood to the heart tissues; and systematic, movement of blood between the heart and the rest of the body.

Answer 3

The heart pumps the blood around the body