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Lumen

Lumen

(Science: anatomy) The cavity or channel within a tube or tubular organ.


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G.I. Problems from Antibiotic Use

There's not a lot of distribution from blood to the colonic lumen - it's virtually oxygen-free, the residents live on the contents and not systemic nutrients. I'm sure that some blood-carried materials get in there, but it's not a certainty.

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by Darby
Mon Nov 11, 2013 11:26 pm
 
Forum: Human Biology
Topic: G.I. Problems from Antibiotic Use
Replies: 11
Views: 4099

cellular mechanisms that result in symptoms of cholera

... heterotrimeric G protein. This results in constitutive cAMP production, which in turn leads to secretion of H2O, Na+, K+, Cl−, and HCO3− into the lumen of the small intestine and rapid dehydration. The gene encoding the cholera toxin is introduced into V. cholerae by horizontal gene transfer. ...

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by adithya528
Tue Dec 11, 2012 1:49 pm
 
Forum: Cell Biology
Topic: cellular mechanisms that result in symptoms of cholera
Replies: 4
Views: 5043

I need help about cardiovascular system.

... duct drains wastes from the fetuses kidneys and large intestine. (T) ----------------------------------------- Name a vascular and a non-vascular lumen that pass through or by the diaphragm. Vascular : vena cava, arota Non-vascular: esophagus Am I right? Thank You Guys..

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by kingofgameyg
Wed Apr 18, 2012 3:11 am
 
Forum: Human Biology
Topic: I need help about cardiovascular system.
Replies: 2
Views: 2236

Please Help with Homework (fairly easy questions)

... breezes to get in and aromas to get out but keeps out insects. Its function most resembles A) the cytosol. B) the plasma membrane. C) the ER lumen. D) a ribosome. B) 7. You are looking at a cell under a microscope and trying to determine whether it is a prokaryote or a eukaryote. You know ...

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by billyfisher100
Wed Feb 15, 2012 6:46 pm
 
Forum: General Discussion
Topic: Please Help with Homework (fairly easy questions)
Replies: 6
Views: 35074

Please Help with Homework (fairly easy questions)

... breezes to get in and aromas to get out but keeps out insects. Its function most resembles A) the cytosol. B) the plasma membrane. C) the ER lumen. D) a ribosome. 7. You are looking at a cell under a microscope and trying to determine whether it is a prokaryote or a eukaryote. You know it ...

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by WishIknewbio
Wed Feb 15, 2012 6:02 pm
 
Forum: General Discussion
Topic: Please Help with Homework (fairly easy questions)
Replies: 6
Views: 35074
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