PHYSIOLOGY
CARDIOVASCULAR PHYSIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following regulates the degree of filling of the capillary beds and level of arterial pressure?
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tonus of smooth muscle of arteriolar walls
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viscosity of blood
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endothelium secretions
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all of the above
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Explanation:
Detailed explanation-1: -Metarterioles and Capillary Beds The precapillary sphincters, circular smooth muscle cells that surround the capillary at its origin with the metarteriole, tightly regulate the flow of blood from a metarteriole to the capillaries it supplies.
Detailed explanation-2: -Blood from the capillary bed is drained by the venules, which carry blood back toward the heart.
Detailed explanation-3: -Blood flow through the body is regulated by the size of blood vessels, by the action of smooth muscle, by one-way valves, and by the fluid pressure of the blood itself.
There is 1 question to complete.