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Question

The diagrams given below are cross-sections of blood vessels.

Mention one structural difference between A and B.


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Solution

A-Artery B-Vein
  • Thick, elastic, and more muscular walls.
  • They have narrow lumen and valves are absent.
  • Thin, non-elastic, and less muscular walls.
  • They have wider lumen and valves are present to prevent the backflow.

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