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 is/are true of a shunt vessels?One, some or all answers could be correct?
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It connects an artery to a vein directly
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It bypasses using capillaries
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It can control blood flow to different body areas
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It can constrict (narrow) or dilate (widen)
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Explanation:
Detailed explanation-1: -Vascular shunting is the process of redistribution of blood. Blood diverted to active areas and diverted away from inactive areas. Occurs through vasoconstriction (narrowing of arteries) and vasodilation (widening of arteries). Active areas during exercise = brain and working muscles.
Detailed explanation-2: -When blood vessels constrict, blood flow is slowed or blocked. Vasoconstriction may be slight or severe. It may result from disease, drugs, or psychological conditions. Medicines that cause vasoconstriction include: Decongestants, including pseudoephedrine.
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