Question

what is Heart?

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Answer 1

Answer:

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. ... The left ventricle (the strongest chamber) pumps oxygen-rich blood to the rest of the body.

Explanation:

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Answer 2

Answer:

The heart is a fist-sized organ that pumps blood throughout your body. It's the primary organ of your circulatory system. Your heart contains four main sections (chambers) made of muscle and powered by electrical impulses. Your brain and nervous system direct your heart's function.

Explanation:

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