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Postby JennJenn73_angel » Thu Apr 28, 2005 11:57 pm

Is it correct to say that viens carry blood with high concentrations of waste products and arteries carry blood with high concentrations of nutrients, and why?
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Postby Poison » Fri Apr 29, 2005 4:38 pm

yes generally it is correct. because arteries carry nutrients to the tissues and veins take waste products.
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Postby MrMistery » Fri Apr 29, 2005 7:24 pm

Yes but there are exceptions... like the renal vein...
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Postby Poison » Fri Apr 29, 2005 7:38 pm

that's why I said generally. :)
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Postby Charlene » Sat Apr 30, 2005 3:13 pm

What kind of exceptions? :) I want to learn too =p
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Postby EmmVeePee » Sun May 01, 2005 12:31 am

Wouldn't it be opposite in the pulmonary circuit?
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Postby MrMistery » Sun May 01, 2005 12:34 am

The pulmonary circuit is different... It's role is simply getting oxygen to the heart... My opinion is that you can not talk about this issue there
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Postby Poison » Sun May 01, 2005 5:54 pm

I think the point is that what do we mean by saying 'waste products'. I mean is CO2 considered as a waste product or are things like urea considered as waste.
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Postby EmmVeePee » Mon May 02, 2005 2:55 am

MrMistery wrote:The pulmonary circuit is different... It's role is simply getting oxygen to the heart... My opinion is that you can not talk about this issue there


The question asks what do veins and arteries carry. The pulmonary artery carries CO2 and the pulmonary vein carries the O2.

I just don't see how we are excluding the pulmonary circuit as it has veins and arteries.

We are talking about waste products meaning CO2, right?
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Postby Poison » Mon May 02, 2005 4:50 pm

CO2 is not the only waste product. Urea is also waste.
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Postby MrMistery » Tue May 03, 2005 5:41 pm

My mistake... i forgot co2 is a waste product... i was thinking of urea, ammoniac and uric acid and stuff like that
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