Question

why the walls of veins are not thick





ans me pointwise and for 10 class ncert​

Answer 1

Answer:

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.

Answer 2

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