Why walls of veins are thinner …
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Posted by Naman Kamboj 6 years, 10 months ago
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Yogita Ingle 6 years, 10 months ago
The Circulatory System has, at the centre of it, the Heart. It pumps blood out at high pressure so that it can reach all the parts of the body quickly. To withstand the pressure of the blood coming out from the heart, arteries need thick walls.
The returning blood in the veins is under low(er) pressure. Because of the lower pressure, vein walls are thinner. However, veins also have one-way stop valves to keep blood from flowing backwards.
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