PATHOLOGY MCQ
BLOOD VESSELS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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In arteries, the thickest layer of the wall is the
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tunica interna
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tunica externa
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tunica media
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vasa vasorum
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Explanation:
Detailed explanation-1: -The tunica media is the thickest layer of the arterial wall and is composed of elastic fibers, SMCs, fibroblasts and extracellular matrix.
Detailed explanation-2: -Medium veins have a much thinner tunica media than is seen in parallel arteries. The adventitia is the thickest layer in medium veins and contains collagen and elastin fibers.
Detailed explanation-3: -The tunica media, or middle coat, is thicker in arteries, particularly in the large arteries, and consists of smooth muscle cells intermingled with elastic fibres.
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