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A vein possesses a larger lumen because...

A vein possesses a larger lumen because

A

tunica media and tunica externa form a single coat

B

tunica interna and tunica media form a single coat

C

tunica interna, tunica media and tunica externa are thin

D

tunica media is a thin coat

Text Solution

Verified by Experts

The correct Answer is:
D
(d) The tunica medi a comparatively thin in the veins making a large lumen in veins. Basically each artery and vein consists of three layers, an inner lining of squamous endothelium, the tunica interna, a middle layer of smooth muscle and elastic fibre, the tunica media and an external layer of fibrous connective tissue with collagen fibres, the tunica externa.
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