Question

what is role of vien ? define it.
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Answer 1

Answer:

veins carry oxygen-depleted blood back to the heart.

Veins are a type of blood vessel that return deoxygenated blood from your organs back to your heart.

Hope it will help you sis..

Answer 2

1.Involved in carrying impure, deoxygenated blood.

2.Veins carry blood rich in carbon di oxide from all the cells of the body to the heart. The pressure exerted by the walls of the veins is less and have thin walls.