MEDICAL
ARTERIES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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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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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: -Thick walls of arteries help them to resist the pressure of the flow of blood in them. Elastic walls of arteries: The elastic layer allows stretching and absorbs pressure. The walls stretch and recoil in response to pumping, thus peaks in pressure are absorbed.
Detailed explanation-3: -What do elastic arteries do? Elastic arteries are vital to getting oxygen and nutrients to your body’s cells. They have to be able to handle the high pressure and volume of blood that your heart pumps.
Detailed explanation-4: -The aorta, where the artery wall contains a high proportion of elastin fibres, permits significant distension during systole. During diastole, blood is pushed forward through the arterial tree due to elastic recoil ensuring blood flow in one direction and smoothing of blood flow.