PATHOLOGY MCQ
BLOOD VESSELS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The advantage of the capillaries having thin walls is ____
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they don’t take up much space
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they easily connect arteries and veins
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they allow for the easy passage (diffusion) of gases such as oxygen and carbon dioxide (between the blood and body cells)
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None of the above
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Explanation:
Detailed explanation-1: -It is important for capillaries to have thin, permeable walls to allow substances to diffuse into and out of cells.
Detailed explanation-2: -The final branches of the circulatory system are the capillaries. Blood capillaries have a very thin lumen for the proper exchange of nutrients and gases. The lumen of the capillaries is very small because the blood flow here is too slow for the maximum exchange process.
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