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Are veins or arteries bigger?
Questioner：Gabriel Wilson 2018-04-06 10:05:32
The most authoritative answer in 2024
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Julian Ward——Works at the International Fund for Agricultural Development, Lives in Rome, Italy.
As a medical professional with a background in anatomy and physiology, I can provide you with an accurate comparison between veins and arteries.
Arteries are generally larger and have thicker walls compared to veins. This is because arteries are responsible for carrying oxygen-rich blood away from the heart to the rest of the body under high pressure. The thick walls, composed of smooth muscle and elastic fibers, allow them to withstand this pressure and maintain a fast flow of blood.
Veins, on the other hand, carry blood back to the heart from the body's tissues. The blood in veins is under lower pressure, and therefore, veins do not need to be as strong as arteries. They are smaller and have thinner walls, consisting mostly of collagen and a few elastic fibers. Additionally, veins contain valves that prevent the backflow of blood.
In summary, arteries are larger than veins due to the functional differences in their roles within the circulatory system.
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Mason Hall——Works at BioHealth Labs, Lives in Boston, MA.
Arteries carry blood away from the heart and veins return blood to the heart. Veins are generally larger in diameter, carry more blood volume and have thinner walls in proportion to their lumen. Arteries are smaller, have thicker walls in proportion to their lumen and carry blood under higher pressure than veins.read more >>
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