Question

definition of human heart​

Answer 1

Answer:

a hollow muscular organ of the body that expands and contracts to move blood through the arteries and veins.

Explanation:

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Answer 2

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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.