PHYSIOLOGY
CARDIOVASCULAR PHYSIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A process in which blood vessels constrict causing a decrease in blood flow
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A process in which blood vessels increase their diameter causing an increase in blood flow
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A process in which blood vessels constrict causing an increase in blood flow
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A process in which blood vessels increase their diameter causing a decrease in blood flow
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Detailed explanation-1: -Vasodilation is the widening of blood vessels as a result of the relaxation of the blood vessel’s muscular walls. Vasodilation is a mechanism to enhance blood flow to areas of the body that are lacking oxygen and/or nutrients.
Detailed explanation-2: -As the radius of the vessel lumen increases (called vasodilation), blood flow increases dramatically, and vice versa [1].
Detailed explanation-3: -Vasodilation is the widening of your blood vessels. It happens when smooth muscles found in the walls of arteries or large veins relax, allowing the blood vessels to become more open. This leads to an increase in blood flow through your blood vessels as well as a decrease in blood pressure.
Detailed explanation-4: -Contraction and relaxation of the circular muscles decrease and increase the diameter of the vessel lumen, respectively. Specifically in arteries, vasoconstriction decreases blood flow as the smooth muscle in the walls of the tunica media contracts, making the lumen narrower and increasing blood pressure.