BI-1117
Arteries, veins and capillaries
Biology · Secondary 3 · Medium · Arteries, veins and capillaries
Which statement correctly compares the structure of an artery and a vein?
- Artery has thicker walls and no valves; vein has thinner walls and valves.
- Artery has thinner walls and valves; vein has thicker walls and no valves.
- Both artery and vein have thin walls and valves.
- Both artery and vein have thick walls and no valves.
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