what is mean by heart
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Your heart is the organ in your chest that pumps the blood around your body. People also use heart to refer to the area of their chest that is closest to their heart
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heart...
a hollow muscular organ that pumps the blood through the circulatory system by rhythmic contraction and dilation. In vertebrates there may be up to four chambers (as in humans), with two atria and two ventricles...
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