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The heart is a muscular organ in most animals, which pumps blood through the blood vessels of the circulatory system .the pump blood carries oxygen and nutrients to the body , while carrying metabolic waste such as carbon dioxide to the lungs
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The blood provides your body with the oxygen and nutrients it needs. It also carries away waste. Your heart is sort of like a pump,or two pumps in one. The right side of your heart receives blood from the body and pumps it to the lungs.
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