what is circulation system
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The blood circulatory system delivers nutrients and oxygen to all cells in the body. It consists of the heart and the blood vessels running through the entire body. The arteries carry blood away from the heart; the veins carry it back to the heart.
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A circular system is a network consisting of blood, blood vessels and heart. It is also known as cardiovascular system or vascular system. This network supplies tissues in the body with oxygen and other nutrients, transport hormones and removes waste products.
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