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Biology question arteries

Hi, please can I have help on this question? I don’t understand why the answer isn’t C (the answer is A)? Don’t arteries have a smaller diameter than veins
Here is the question: https://app.gemoo.com/share/image-annotation/630962248543027200?codeId=v67N4kKGN6k8y&origin=imageurlgenerator
Thanks!
Original post by anonymous294
Hi, please can I have help on this question? I don’t understand why the answer isn’t C (the answer is A)? Don’t arteries have a smaller diameter than veins
Here is the question: https://app.gemoo.com/share/image-annotation/630962248543027200?codeId=v67N4kKGN6k8y&origin=imageurlgenerator
Thanks!
The great thing about mcq’s is you can eliminate wrong answers, and look for a difference between the remaining answers:
We rule out capillaries (single layer of endothelial cells, no collagen or elastin…). So it is not B or C.
P is artery due to large diameter and highest % elastin (for elastic recoil, artery maintain constant pressure). Since A says P = artery and D says P = vein, It is A
(edited 2 months ago)
Reply 2
Original post by BankaiGintoki
The great thing about mcq’s is you can eliminate wrong answers, and look for a difference between the remaining answers:
We rule out capillaries (single layer of endothelial cells, no collagen or elastin…). So it is not B or C.
P is artery due to large diameter and highest % elastin (for elastic recoil, artery maintain constant pressure). Since A says P = artery and D says P = vein, It is A

Thanks, that nearly makes sense but dont arteries have a smaller diameter of lumen because of maintaining the high blood pressure?

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