Difference between revisions of "Gall Bladder - Anatomy & Physiology"
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The gall bladder stores bile produced in the [[Liver - Anatomy & Physiology|liver]]. Bile is important in the digestion of lipids. | The gall bladder stores bile produced in the [[Liver - Anatomy & Physiology|liver]]. Bile is important in the digestion of lipids. | ||
| − | The gall bladder forms as an outgrowth of the bile duct, as a secondary hollow at the posterior edge of the original hepatic rudiment. The gall bladder and the cyctic duct joins the common bile duct which enters the [[Duodenum - Anatomy & Physiology|duodenum]] at the major duodenal papillae (with the pancreatic duct) on the dorsal surface of the [[Duodenum - Anatomy & Physiology|duodenum]] | + | The gall bladder forms as an outgrowth of the bile duct, as a secondary hollow at the posterior edge of the original hepatic rudiment. The gall bladder and the '''cyctic duct''' joins the common bile duct which enters the [[Duodenum - Anatomy & Physiology|duodenum]] at the major '''duodenal papillae''' (with the pancreatic duct) on the dorsal surface of the [[Duodenum - Anatomy & Physiology|duodenum]]. |
==Structure== | ==Structure== | ||
| − | [[Image:Canine Gallbladder Anatomy.jpg|thumb|right| | + | [[Image:Canine Gallbladder Anatomy.jpg|thumb|right|250px|Location of the Canine Gallbladder - Copyright RVC 2008]] |
| − | + | The gall bladder lies between the right medial and quadrate lobes of the [[Liver - Anatomy & Physiology|liver]]. It is partly attached and partly free. | |
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==Function== | ==Function== | ||
| − | + | The gall bladder stores bile and concentrates bile by absorption through the folded mucosal wall. | |
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==Innervation== | ==Innervation== | ||
| − | + | The gall bladder is innervated by parasympathetic nerves. | |
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==Species Differences== | ==Species Differences== | ||
'''Equine''' | '''Equine''' | ||
| − | + | Equine species have no gallbladder. | |
'''Rodents''' | '''Rodents''' | ||
| − | + | There is no gallbladder in rats. | |
'''Canine''' | '''Canine''' | ||
| − | + | The gall bladder lies opposite the 8th intercostal space. It has the thinest layers of tunica muscularis. | |
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'''Bovine''' | '''Bovine''' | ||
| − | + | The bovine gall bladder has the thickest layers of the tunica muscularis. The sheep have a less projecting gall bladder than cows. The gallbladder lies against the 10th or 11th rib. | |
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'''[[Avian Digestive Tract - Anatomy & Physiology|Avian]]''' | '''[[Avian Digestive Tract - Anatomy & Physiology|Avian]]''' | ||
| − | + | '''Pigeons''' and '''parrots''' lack a gallbladder. | |
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==Links== | ==Links== | ||
| − | [[:Category:Gall Bladder and Tract - Pathology| | + | '''Test yourself with the [[Liver - Anatomy & Physiology - Flashcards|Liver & Gall Bladder Flashcards]]''' |
| − | + | '''Click here for gall bladder [[Gall Bladder - Histology|histology]]''' | |
| + | '''Click here for [[:Category:Gall Bladder and Tract - Pathology|pathology of the Gall Bladder]]''' | ||
[[Category:Liver and Gall Bladder - Anatomy & Physiology]] | [[Category:Liver and Gall Bladder - Anatomy & Physiology]] | ||
| − | [[Category:To Do - | + | [[Category:To Do - AimeeHicks]] |
Revision as of 08:21, 14 September 2010
Introduction
The gall bladder stores bile produced in the liver. Bile is important in the digestion of lipids.
The gall bladder forms as an outgrowth of the bile duct, as a secondary hollow at the posterior edge of the original hepatic rudiment. The gall bladder and the cyctic duct joins the common bile duct which enters the duodenum at the major duodenal papillae (with the pancreatic duct) on the dorsal surface of the duodenum.
Structure
The gall bladder lies between the right medial and quadrate lobes of the liver. It is partly attached and partly free.
Function
The gall bladder stores bile and concentrates bile by absorption through the folded mucosal wall.
Innervation
The gall bladder is innervated by parasympathetic nerves.
Species Differences
Equine Equine species have no gallbladder.
Rodents There is no gallbladder in rats.
Canine The gall bladder lies opposite the 8th intercostal space. It has the thinest layers of tunica muscularis.
Bovine The bovine gall bladder has the thickest layers of the tunica muscularis. The sheep have a less projecting gall bladder than cows. The gallbladder lies against the 10th or 11th rib.
Pigeons and parrots lack a gallbladder.
Links
Test yourself with the Liver & Gall Bladder Flashcards Click here for gall bladder histology Click here for pathology of the Gall Bladder