NUTRITION
THE HUMAN BODY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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to reduce cholesterol levels in the blood
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to resist the higher pressure from the blood
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to stop the blood from going into the capillaries
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to prevent blood from flowing backward in the vessels
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Detailed explanation-1: -Since the blood pumped from the heart into the arteries flows at higher pressure than the blood in veins, hence arteries need to have thicker walls or else the high blood pressure might cause them to burst.
Detailed explanation-2: -The main function of the arteries is to circulate or to carry oxygenated blood from the heart to different parts of the human body. 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.
Detailed explanation-3: -For the blood to reach all parts of the body, heart pumps blood at a high pressure into the arteries. Veins, on the other hand carry deoxygenated blood from various body parts to the heart. In veins, the blood flows slowly. Hence, arteries have to be thicker than veins to withstand such high pressure.
Detailed explanation-4: -Arteries are most elastic and thicker than veins because the blood they receive from the heart enters them with great force and at a much higher pressure than veins so arteries need to be able to withstand the pressure exerted on them.