Question

Veins are thin walled and have valves.justify.​

Answer 1

Answer:

Veins have thin walls because the blood there is no longer under pressure and they have valves to ensure blood flow in one direction..

Hope it helps..

Answer 2

Answer:

Veins collect the blood from different organs abd bring it back to the heart. The blood is no longer under pressure so, the walls are thin with valves to ensure that blood flows only in one direction.

hope it will be help you sorry dear