File:Gall bladder histology 005.gif: Difference between revisions
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==Anatomy== | ==Anatomy== | ||
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* Pear-shaped | * Pear-shaped | ||
* distensible sac (about 50ml volume) | * distensible sac (about 50ml volume) | ||
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** Gall bladder -> cystic duct | ** Gall bladder -> cystic duct | ||
** Common Bile duct | ** Common Bile duct | ||
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Macroscopic Mucosal features: | Macroscopic Mucosal features: | ||
* Mucosa (epithelium + lamina propria) | * Mucosa (epithelium + lamina propria) | ||
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** Rokintansky-Aschoff sinuses | ** Rokintansky-Aschoff sinuses | ||
* Serosa/Adventitia (dense CT + visceral mesothelium) | * Serosa/Adventitia (dense CT + visceral mesothelium) | ||
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==Epithelium== | ==Epithelium== | ||
Revision as of 16:35, 24 August 2011
Human Gall Bladder Histology
Animated histology image of gall bladder wall. H&E
Anatomy
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Macroscopic Mucosal features:
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Epithelium
- Columnar epithelium with microvilli (absorptive epithelium)
- Epithelium lining the biliary system does not contain mucus-producing cells (few located in neck of gall bladder)
- Basement membrane (not basal lamina which forms part of basement membrane and only visible by EM)
Lamina Propria
- connective tissue
- collagen fibers and fibroblasts
- fenestrated capillaries and venules
- lymphocytes and plasma cells
Smooth Muscle Layer
- random orientation of smooth muscle cells (fibers)
- muscularis propria (or fibromuscular coat)[1]
- not like the rest of GIT smooth muscle organisation, which is divided into muscularis mucosa (inside submucosa), muscularis externa (circular and longitudinal)
- various terminology used for this layer in different sources
Serosa/Adventitia
- Dense connective tissue layer covered with visceral mesothelium epithelial layer
- Adventitia - where it is attached to the liver
- Serosa - where it is free in the peritoneum
- Large blood vessels (arteries, veins)
- Obvious lymphatic vessels
- Autonomic nerve bundles
- Adipose tissue
Original File name: Gall-bladder-zoom-600x450label.gif
- ↑ <pubmed>21074688</pubmed>
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 16:32, 24 August 2011 |  | 600 × 450 (683 KB) | S8600021 (talk | contribs) | ==Human Gall Bladder Histology== Gall bladder columnar epithelium. H&E Original File name: Gall-bladder-zoom-600x450label.gif Category:Human Category:Gastrointestinal Tract Category:Histology |
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