HISTOLOGY
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 tunica media is the substantial middle layer of the vessel wall (see Figure 2). It is generally the thickest layer in arteries, and it is much thicker in arteries than it is in veins.
Detailed explanation-2: -The tunica media is the middle layer of the vessel wall. The tunica media is generally thicker on the arterial side of the vascular system and contains transversely arranged smooth muscle cells that are capable of changing the caliber of the vessel lumen.
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