PATHOLOGY MCQ
BLOOD VESSELS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following has the thickest tunica media (middle layer) of muscle tissue?
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Pulmonary artery
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Pulmonary vein
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Superior vena cava
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Inferior vena cava
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Explanation:
Detailed explanation-1: -The innermost layer, the tunica intima (also called tunica interna), is simple squamous epithelium surrounded by a connective tissue basement membrane with elastic fibers. The middle layer, the tunica media, is primarily smooth muscle and is usually the thickest layer.
Detailed explanation-2: -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.
There is 1 question to complete.