MEDICAL
ARTERIES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which vessel has sphincter muscles at the ends to regulate flow?
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Artery
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Vein
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Arterioles
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Venules
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Explanation:
Detailed explanation-1: -A metarteriole is a type of vessel that has structural characteristics of both an arteriole and a capillary. Slightly larger than the typical capillary, the smooth muscle of the tunica media of the metarteriole is not continuous but forms rings of smooth muscle (sphincters) prior to the entrance to the capillaries.
Detailed explanation-2: -Thoroughfare capillaries or channels-direct link between arteriole and venule. True capillaries-Flow into them is regulated by pre-capillary sphincters.
Detailed explanation-3: -Blood flow is regulated locally in the arterioles and capillaries using smooth muscle contraction, hormones, oxygen, and changes in pH.
There is 1 question to complete.