Question

why are arteries thich walled. why veins have thinner walls

Answer 1

arteries receives blood from left atrium forcefully and the pump it to each and every organ of body...it need much capacity to do its work. so it has thick walls

and veins are used to receive blood first from lungs and then send blood from body parts to lungs..it does not need sk much energy to carry blood therefore it has thin walls
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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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