Question

what is mean by heart?​

Answer 1

Answer:

Heart: 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.

Answer 2

Answer:

A heart is a hollow muscular organ that pumps the blood through the circulatory system by rhythmic contraction and dilation. 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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