![Vein differs from artery in having](https://www.gkseries.com/blog/wp-content/uploads/2022/04/Vein-differs-from-artery-in-having.png)
Q. Vein differs from artery in having
A. narrow lumen
B. strong muscular walls
C. pigmented wall
D. valves
Answer: valves
A. narrow lumen
B. strong muscular walls
C. pigmented wall
D. valves
Answer: valves
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