Question

The lumen size is bigger in vein when compared with artery. Why? (A:
plz tell in short​

Answer 1

Answer:

In other words, in comparison to arteries, venules and veins withstand a much lower pressure from the blood that flows through them. Their walls are considerably thinner and their lumens are correspondingly larger in diameter, allowing more blood to flow with less vessel resistance.

if you liked plz mark as brainlist and follow me