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Questions
Describe the structural differences between an artery and a vein.
Mention two structural differences between an artery and a vein.
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Solution
| Artery | Vein |
| An artery is a vessel that carries blood away from the heart towards any organ. | A vein is a vessel which conveys the blood away from an organ towards the heart. |
| An artery has thick muscular walls. | A vein has thin muscular walls. |
| It has a narrow lumen. | It has a broad lumen. |
| There are no valves. | Thin pocket-shaped valves are present in the veins. |
| Arteries progressively decrease in size and branch to form arterioles. Arterioles further break up to form capillaries. | Capillaries unite to form branches called Venules. Venules further unite to form veins. |
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