7(iii)
Mention two structural differences between an artery and a vein.
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Two structural differences between an artery and a vein are:
| S. No. | Arteries | Veins |
|---|---|---|
| 1. | Arteries have thick and muscular walls. | Veins have thin and less muscular walls. |
| 2. | Have narrower lumen. | Have wider lumen. |