I'm stumped on this GCSE biology question? Watch

AspiringAccount
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It's IGCSE but it probably isn't that different. I'm counting on you lads.
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entertainmyfaith
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moved to chemistry (post the question and any working out so it can be responded to quickly!)
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lexiwilliamz
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Lumen in vein is much larger than in artery
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iElvendork
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(Might be useful if you had the right subject)
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entertainmyfaith
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wait is the title meant to say 'biology'? (moving to biology and editing title)
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lexiwilliamz
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Pretty sure second thing is to do with the dots but idk if they’re capillaries or mitochondria or what??
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AspiringAccount
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(Original post by entertainmyfaith)
wait is this the title meant to say 'biology'?
Damn it you're right so How do I edit the title then.
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Sinnoh
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(Original post by AspiringAccount)
Damn it you're right so How do I edit the title then.
You cannot. I think the dots are just meant to show that it's muscle tissue.
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entertainmyfaith
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(Original post by AspiringAccount)
Damn it you're right so How do I edit the title then.
i've edited the title for you but i think if you go to the first post of the thread you should be able to edit the title
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Anonymoususer16
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Vein tissue is thinner and the lumen is wider than the artery - this means that veins transport blood at a lower pressure than arteries.
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leelee7237
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(Original post by AspiringAccount)
It's IGCSE but it probably isn't that different. I'm counting on you lads.
The lumen sizes differ and so do the muscle size, due to a difference in function of the two.
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Ridinghigh95
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Just google the difference between the two. There are plenty of differences
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Jpw1097
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(Original post by AspiringAccount)
It's IGCSE but it probably isn't that different. I'm counting on you lads.
There are plenty of differences between arteries and veins. To name a few, arteries have a much thicker wall relative to their lumen - this is because the tunica media (the layer which contains smooth muscle and elastic tissue) is much thicker in arteries in veins. Veins have a much thinner wall relative to their lumen, however veins have a much thicker tunica adventitia (outer layer made of collagen) than arteries.
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