Question 1

desctibe the parts of the small intestine?

Accepted Answer

See below: The stomach empties into the first part of the small intestine, the duodenum, where bile and pancreatic enzymes enter for digestion. Next is the jejunum and then the ileum. These are parts of the small intestine that also absorb nutrients & vitamins that then can enter into the blood stream.

Question 2

segmentation in the small intestine is promoted by what?

Accepted Answer

Intestinal motility: Segmentation contractions are a mixing type of intestinal motility characteristic of the small and large bowel.  Here's a YouTube video: https://www.youtube.com/watch?v=1yMTmoZhemQ

Question 3

are all nutrients absorbered in the small intestine through enterocytes and not b/t bc of tight junctions?

Accepted Answer

No: The tight junctions have variable permeability that can be changed through alterations to proteins called claudins.  Additionally, the tight junctions are sometimes disrupted in disease states with increased global gut permeability .  For a physiologic exploration of this phenomenon you may want to check out http://www.Ncbi.Nlm.Nih.Gov/pubmed/19291785.

Question 4

i was wondering what are the odds of someone being able to live a long healthy life with only 5 inches of small/lower intestine?

Accepted Answer

The odds: Of intestinal adaptation, not being reliant on IV nutrition, increase if one has more than 15 cm of small intestine with a remaining ileocecal valve.

Question 5

what causes a obstruction in the small intestine?

Accepted Answer

Within and without..: The obstrction can be form something within the lumen (the passage) or within the wall or from externally (within the abdomen but outside the si). With this in mind it is possible to work through the possibilites and reach a conclusion...

Question 6

how are cysts found in the small intestine treated?

Accepted Answer

Cysts in the: small intestine are uncommon.  Enteric duplication cysts, which are congenital anomalies, can occur anywhere along the GI tract. Usually these are asymptomatic, incidental findings on imaging studies and require no treatment. If they cause problems due to obstruction they can be surgically removed.

Question 7

is there a such thing as a small intestine transplant?

Accepted Answer

Yes: Small intestine transplants are performed in cases of acute or chronic intestinal failure (loss of organ function with inability to maintain normal nutrition, fluid balance, growth and development), when alternatives, such as IV nutrition, are inadequate or when complications of IV nutrition, such as liver failure or recurrent infections, exist.

Question 8

how long is the small intestine?

Accepted Answer

Varies: 20-30 feet in adults.  As a pathologist, i've often wondered why the variability; no one knows.

Question 9

where is the small intestine located?

Accepted Answer

Abdomen: The approximately 20 feet of small intestine is coiled up in your abdomen (belly). It starts at the end of your stomach (the actual organ is not the same as your abdomen) and ends where it joins the colon.

Question 10

which test looks at the small intestine?

Accepted Answer

Several tests: Several tests examine the intestine: endoscopy, exploratory surgery, ct scan, x-ray, gastrograffin enema, ultrasound. Each test is used based upon the clinical presentation and indication. The least invasive and least expensive are x-ray and ultrasound. They also provide the least information. Ct scan provides a lot of info, but requires more radiation. Endoscopy and surgery have more risks.

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Desctibe the parts of the small intestine?

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Are all nutrients absorbered in the small intestine through enterocytes and not b/t bc of tight junctions?

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I was wondering what are the odds of someone being able to live a long healthy life with only 5 inches of small/lower intestine?

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What causes a obstruction in the small intestine?

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Which test looks at the small intestine?

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