what is mean by heart?
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The muscle that pumps blood received from veins into arteries throughout the body. ... The heart is composed of specialized cardiac muscle, and it is four-chambered, with a right atrium and ventricle, and an anatomically separate left atrium and ventricle.
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Human Employment And Resource Training.
The heart is a muscular organ in most animals, which pumps blood through the blood vessels of the circulatory system.
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