Dictionary » T » Tract



(Science: anatomy) A region, principally one of some length, specifically a collection or bundle of nerve fibres having the same origin, function and termination (tractus) or a number of organs, arranged in series, subserving a common function.

Origin: L. Tractus

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Stem Cells and Cell division?

... middle layer or mesoderm gives rise to the connective tissue, muscles, bones and blood, and the endoderm (inner layer) forms the gastrointestinal tract of the future mammal. Early in embryogenesis, some cells migrate to the primitive gonad or genital ridge. These are the precursors to the gonad ...

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by RZachary1
Wed Jan 14, 2015 5:51 am
Forum: Cell Biology
Topic: Stem Cells and Cell division?
Replies: 6
Views: 5381

improved glucose tolerance in non obese type 2 diabetic rats

... of glucose tolerance after ileal transposition in a non-obese type 2 diabetes rat model. Surgical operations which shorten the intestinal tract between the stomach and the terminal ileum result in an early improvement in type 2 diabetes, and one possible explanation is the arrival of undigested ...

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by rmorrison
Wed Mar 19, 2014 6:53 pm
Forum: Human Biology
Topic: improved glucose tolerance in non obese type 2 diabetic rats
Replies: 0
Views: 3390

Things that cause cancer (in modern humans who live longer)

... to the increased cancer risk red meat, as far as I know, affects the gut epithelium and mostly increases the cancer rate in the lower digestive tract. However, mutations happening in the gut do not get passed on to the children, since only mutations in the germ line cells do so (which increase ...

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by biohazard
Wed Oct 31, 2012 11:05 am
Forum: Evolution
Topic: Things that cause cancer (in modern humans who live longer)
Replies: 4
Views: 5274

Re: Am I the Next Step in Human Evolution?

... hold on a large enough amount of people and thus for them to stick around in our genes. Imagine, there's this guy, and he's born with a digestive tract that keeps him perfectly healthy no matter how much macdonalds he eats, brain chemistry that makes him perfectly happy with working hard at a ...

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by andreassiege
Tue Oct 09, 2012 3:32 pm
Forum: Evolution
Topic: Am I the Next Step in Human Evolution?
Replies: 25
Views: 44994

Re: Theories - Origin of Life

... came first? The genes that code for the proteins using the amino acids that the body can make. OR The genes that codes for the entire digestive tract that provides the cell with the amino acids that body can't make but which the body cannot do without. Isn't it obvious that that the whole show ...

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by scottie
Thu Sep 13, 2012 11:43 am
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 563
Views: 1127477
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