What is the blood vessel called that carries the blood back to the heart?

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THE HUMAN QUESTION #664

What is the blood vessel called that carries the blood back to the heart?

Vein

Explanation

Arteries are blood vessels that carry oxygenated blood away from the heart towards other organs in the body. The word comes from the Greek artēria, "windpipe". A vein does the opposite and carries deoxygenated blood from the tissues back to the heart. A human contains some 4-5 litres blood.

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Answer time 0s (0s). 50% have previously answered correct on this question. The question was created 2008-07-04.