VASCULAR
TYPES OF ARTERIES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Why is it important arteries have alot of muscle and elastic tissue?
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To expand and contract around the pulse to maintain blood pressure
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To expand under high pressure
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To expand under high pressure and recoil to maintain the blood pressure
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So blood flow can be stopped if needed
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Explanation:
Detailed explanation-1: -Arteries and arterioles have relatively thick muscular walls because blood pressure in them is high and because they must adjust their diameter to maintain blood pressure and to control blood flow.
Detailed explanation-2: -These need to be elastic because: They are relatively thin compared to their diameter. When the heart contracts, and ejects blood into these arteries, the walls need to stretch to accommodate the blood surge, storing energy.
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