Question

which of the 2 arteries or veins have thick walls​

Answer 1

Explanation:

than do arteries, largely because the pressure in veins is so much lower. Veins can widen (dilate) as the amount of fluid in them increases. Some veins, particularly veins in the legs, have valves in them, to prevent blood from flowing backward.

Answer 2

Answer:

The thicker and more muscular walls of arteries help them to withstand and absorb the pressure waves which begin in the heart and are transmitted by the blood. The arterial wall expands and swells with the force of each contraction of the heart, then snaps back to push the blood forward as the heart rests. From the arteries, blood enters smaller branches of arteries called arterioles and then the capillary network.