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pulmonary vein carries oxygenated blood to heart

All the vessels that carry blood back to the heart are called veins, all veins carry deoxygenated blood to the heart but pulmonary vein carries oxygenated blood because blood becomes oxygenated in lungs

Some veins carry the blood from an organ to the other organ then to the heart. These are called portal veins such as hepatic portal vein and (in reptiles, amphibians and aves) renal portal vein.

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15y ago

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