Which of the following is correct about the transverse section of a vein, when compared with that of an
artery?
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- A The lumen of a vein is wider than that of an artery
- B The endothelium of the vein is thinner than that of an artery
- C There are more smooth muscles in a vein than in an artery
- D There are valves in veins but not in arteries.
Correct Answer: Option D
Explanation:
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