Question

Why the veins are provided with valves? Why the arteries have thick wall?

Answer 1

veins have valves so that the deoxygenated blood does not travel back...and wolud straight go to the heart for purification. Arteries have thick walls so that they can bear the high pressure of blood from the heart.

Answer 2

HERE IS YOUR ANSWER.....

Arteries are the vessels which carries blood away from the heart❤ to various organs of the body. The blood emerges from the heart❤ under high pressure. So the Arteries have thick and elastic walls.

Veins collect blood from different organs and bring it back to heart❤. They don't need thick walls because the blood is no longer under pressure. They have valves that ensure that the blood flows only in one direction.

HERE IS YOUR ANSWER.....
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