Question

Which of the following return deoxygenated blood back to the heart?

a.

Arteries

b.

Veins

c.

·capillaries

d.

Blood vessels

Answer: (b).Veins Explanation:Veins are the blood vessels which return deoxygenated blood (impure - without oxygen) to the heart. The superior and inferior vena cava are the largest veins in the body and they empty deoxygenated blood into the right atrium of the heart.

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Q. Which of the following return deoxygenated blood back to the heart?

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