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Difference between revisions of "An introduction to gastrointestinal pathology"
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An introduction to gastrointestinal pathology (view source)
Revision as of 02:13, 21 September 2010
, 02:13, 21 September 2010→Normal
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==Normal== | ==Normal== | ||
===Layers=== | |||
Layers of the alimentary canal:<ref>URL: [http://www.lab.anhb.uwa.edu.au/mb140/CorePages/Oral/Oral.htm http://www.lab.anhb.uwa.edu.au/mb140/CorePages/Oral/Oral.htm].</ref><ref>URL: [http://www.lab.anhb.uwa.edu.au/mb140/CorePages/Oral/Images/gitplan.gif http://www.lab.anhb.uwa.edu.au/mb140/CorePages/Oral/Images/gitplan.gif].</ref> | Layers of the alimentary canal:<ref>URL: [http://www.lab.anhb.uwa.edu.au/mb140/CorePages/Oral/Oral.htm http://www.lab.anhb.uwa.edu.au/mb140/CorePages/Oral/Oral.htm].</ref><ref>URL: [http://www.lab.anhb.uwa.edu.au/mb140/CorePages/Oral/Images/gitplan.gif http://www.lab.anhb.uwa.edu.au/mb140/CorePages/Oral/Images/gitplan.gif].</ref> | ||
*Mucosa (epithelium, lamina propria, muscularis mucosa). | *Mucosa (epithelium, lamina propria, muscularis mucosa). | ||
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*Muscularis externa (inner longitudinal, myenteric plexus (or Auerbach's plexus) outer circumferential). | *Muscularis externa (inner longitudinal, myenteric plexus (or Auerbach's plexus) outer circumferential). | ||
*Adventitia (if retroperitoneal), serosa (if intraperitoneal). | *Adventitia (if retroperitoneal), serosa (if intraperitoneal). | ||
===Cell types=== | |||
*Goblet cells. | |||
**Secrete mucin. | |||
*Enterochromaffin cells, [[AKA]] Kulchitsky cells. | |||
**Subnuclear eosinophilic granules. | |||
***Serotonin. | |||
*Paneth cells. | |||
**Supranuclear eosinophilic granules. | |||
Memory device: | |||
*Su'''p'''ranuclear granules = '''p'''aneth cell. | |||
===Bowel=== | ===Bowel=== | ||
[[Small bowel]] | ====[[Small bowel]]==== | ||
*Villi - should see three good ones in a normal biopsy. | *Villi - should see three good ones in a normal biopsy. | ||
*Crypts. | *Crypts. | ||
*Paneth cells. | *Paneth cells. | ||
*Goblet cells. | |||
**Few in proximal small bowel (duodenum). | |||
**Abundant in distal small bowel (ileum). | |||
[[Duodenum]] | ====[[Duodenum]]==== | ||
*Small bowel (as above). | *Small bowel (as above). | ||
*Submucosal glands (Brunner's glands). | *Submucosal glands (Brunner's glands). | ||
Large bowel vs. small bowel | ====Large bowel vs. small bowel==== | ||
*Small intestine. | *Small intestine. | ||
**Villi (key feature). | **Villi (key feature). | ||