HISTOLOGY
BLOOD VESSELS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The ____ is composed of circularly arranged layers of smooth muscle cells
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tunica interna
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tunica media
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tunica externa
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none of the above
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Explanation:
Detailed explanation-1: -In the aorta, the tunica media constitutes the greater part of the vessel wall. It is made up of multiple elastic lamellae alternating with thin layers of circularly oriented smooth muscle .
Detailed explanation-2: -The tunica media is the middle portion of the vessel wall and contains smooth muscle cells and connective tissue, whereas the tunica adventitia is composed of connective tissue that is often continuous with the surrounding soft tissues.
Detailed explanation-3: -Muscular arteries contain more smooth muscle cells in the tunica media layer than the elastic arteries.
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