PATHOLOGY MCQ
BLOOD VESSELS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Elastic stretch and recoil (Windkessel effect) of this blood vessel type keeps blood at a relatively high MAP compared to the rest of the blood vessels.
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artery
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arteriole
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capillary
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vein
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Explanation:
Detailed explanation-1: -During diastole, the elastic recoil of the vessels converts this potential energy into forward blood flow, which ensures that capillary flow is continuous throughout the cardiac cycle. The most severe drop in pressure occurs in the arterioles; hence they are often termed resistance vessels.
Detailed explanation-2: -During systole, when new blood is entering the arteries, the artery walls stretch to accommodate the increase of pressure of the extra blood; during diastole, the walls return to normal because of their elastic properties.
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