Why Do Arteries Have Thicker Walls Than Veins?

Answer

Arteries have thicker walls than veins because the blood flows through the arteries at a much higher pressure. Arteries also have thicker elastic fibers and muscle layers. Arteries carry blood from the heart, and veins carry blood to the heart.
Reference:
Q&A Related to "Why Do Arteries Have Thicker Walls Than Veins?"
"The walls of arteries are thicker than those of veins so as to keep the pressure of the blood constant while the arteries are constricting or relaxing.
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Low pressure in the veins, and that the blood
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Gravitational impacts on blood flow depend on height, and relative pressures between arteries & veins. Arteries must support the pull of gravity adding to the push from the heart
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The oxygen has been depleted from the blood and it is going back for a recharge!
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