Pulmonary vein carries oxygenated blood from _____.
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lungs to heart
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all parts of the body
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heart to lungs
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none of these
A
Correct answer
Explanation
Pulmonary veins are the only veins in the body that carry oxygenated blood, transporting it from the lungs back to the left atrium of the heart. This oxygen-rich blood is then pumped to the rest of the body through the systemic circulation.