EMBRYOLOGY
RESPIRATORY SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Thick Outer Wall, Thick Inner Wall, Narrow Lumen HIGH pressure
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Thin Outer Wall, Thin Inner Wall, Wide LumenLOW Pressure
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Thin Outer Wall, 1 Cell Thick
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Thin Outer Wall, Thick Inner Wall Moderate LumenLOW Pressure
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Detailed explanation-1: -Final answer: The correct statement that describes arteries is they have thick elastic walls without valves inside, blood flows under high pressure and carries blood away from the heart to different parts of the body.
Detailed explanation-2: -Walls of the arteries are thick because they have to withstand the high pressure released from the heart during the process of pumping the blood. Therefore, the thick walls of the arteries help in maintaining the blood pressure simultaneously by controlling blood flow.
Detailed explanation-3: -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.