Explain the working of the human heart with the help of a diagram.
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de oxygenated blood enter to right atrium ( venacava)
oxygenated blood enter to left atrium.(pulmonary vein )
aorta is largest vessel
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Blood flows through your heart and lungs in four steps: The right atrium receives oxygen-poor blood from the body and pumps it to the right ventricle through the tricuspid valve. ... The left atrium receives oxygen-rich blood from the lungs and pumps it to the left ventricle through the mitral valve.At the oxygenated blood is pumped throughout the dody
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