explain the working of heart
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The right side of your heart receives oxygen-poor blood from your veins and pumps it to your lungs, where it picks up oxygen and gets rid of carbon dioxide. The left side of your heart receives oxygen-rich blood from your lungs and pumps it through your arteries to the rest of your body.
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The right atrium receives blood from the veins and pumps it to the right ventricle. The right ventricle pumps the blood received from the right atrium to the lungs. The left atrium receives oxygenated blood from the lungs and pumps it to the left ventricle.
Explanation:
when I see marks or question paper my heart beat slows down.when I see my crush my heart beat gets fast.
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