Question

what is veins............​

Answer 1

Explanation:

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Veins are blood vessels that carry blood towards the heart. Most veins carry deoxygenated blood from the tissues back to the heart; exceptions are the pulmonary and umbilical veins, both of which carry oxygenated blood to the heart. In contrast to veins, arteries carry blood away from the heart.

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Answer 2

veins are blood vessels that take blood from body and reach it in heart.......