A vein differ from an artery in having

Strong muscular walls

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Narrow lumen

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Valves that control direction of blood flow opposite to heart

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Valves that control direction of blood flow towards heart

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Solution

The correct option is D Valves that control direction of blood flow opposite to heart
Veins drain capillaries in the tissues and organs and return the blood to the heart. Veins have a unique structural feature which is not present in arteries. They are equipped with one way valves, that prevent the back flow of blood.

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