MEDICINE MCQ
CARDIOVASCULAR MEDICINE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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constriction or narrowing of the vessel walls
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hardening of the arteries
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narrowing of an artery
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None of the above
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Detailed explanation-1: -Vasoconstriction is the narrowing (constriction) of blood vessels by small muscles in their walls. 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.
Detailed explanation-2: -Vasoconstriction is the narrowing of the blood vessels, which is the opposite of vasodilation. Causes of vasoconstriction include exposure to cold which leads to peripheral vasoconstriction; stress; smoking; medications like NSAIDs; and Raynaud phenomenon.
Detailed explanation-3: -In veins, venoconstriction enhances the blood flow. When vasoconstriction increases the blood pressure in veins, it enhances the blood movement through veins. Thus, venoconstriction increases the return of blood to the heart. Vasoconstriction has negative effects, causing heart diseases due to high blood pressure.