Is the tunica media thicker in arteries or in veins?

arteries

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veins

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arteries and veins

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None of the above

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Solution

The correct option is A
arteries

The tunica media is the middle layer composed of smooth muscle fibers. It is much thicker in arteries than in veins because arteries are actively vasoconstricting or vasodilating. This helps the body to regulate blood flow into an area and blood pressure.

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