Why is the lumen of the artery smaller than the vein?

1.	Why is the lumen of the artery smaller than the vein?
Answer» Answer: Arteries have smaller LUMEN because the BLOOD from the heart comes into the arteries with a lot of pressure. Due to this reason, arteries are THICK walled so that they do not burst. HENCE, to maintain the same pressure, arteries have smaller lumen.

Answer»

Answer:

Arteries have smaller LUMEN because the BLOOD from the heart comes into the arteries with a lot of pressure. Due to this reason, arteries are THICK walled so that they do not burst. HENCE, to maintain the same pressure, arteries have smaller lumen.

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Why is the lumen of the artery smaller than the vein?

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