write notes on the working of the heart of man
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Human heart function
In the systemic circuit, oxygenated blood leaves the body via the left ventricle to the aorta, and from there enters the arteries and capillaries where it supplies the body's tissues with oxygen. Deoxygenated blood returns via veins to the venae cavae, re-entering the heart's right atrium.
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Explanation:
The heart is a muscular organ that pumps blood continuously throughout the body.
It is comprised of four chambers — the right and left atrium and the right and left ventricle.
The chambers of the heart work together by alternately contracting and relaxing to pump blood throughout the heart.
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