wht do u mean by heart......?
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Heart: The muscle that pumps blood received from veins into arteries throughout the body. ... Two-thirds of theheart lies in the left side of the chest, with the balance in the right side of the chest.
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The heart is a muscular organ about the size of a fist, located just behind and slightly left of the breastbone. The heart pumps blood through the network of arteries and veins called the cardiovascular system.
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