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| + | <big><center>[[Liver - Anatomy & Physiology|'''BACK TO THE LIVER''']]</center></big> |
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| | ==Introduction== | | ==Introduction== |
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| − | The gall bladder stores bile produced in the [[Liver - Anatomy & Physiology|liver]]. Bile is important in the digestion of lipids.
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| − | 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 '''cystic 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== |
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| − | ==Structure==
| + | [[Image:Canine Gallbladder Anatomy.jpg|thumb|right|150px|Location of the Canine Gallbladder - Copyright RVC 2008]] |
| | + | *Lies between the right medial and quadrate lobes of the [[Liver - Anatomy & Physiology|liver]] |
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| | + | *Partly attached |
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| | + | *Partly free |
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| − | [[Image:Canine Gallbladder Anatomy.jpg|thumb|right|250px|Location of the Canine Gallbladder - Copyright RVC 2008]]
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| − | 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== |
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| − | The gall bladder stores bile and concentrates bile by absorption through the folded mucosal wall.
| + | *Stores bile |
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| | + | *Concentrates bile by absorption through the folded mucosal wall |
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| | ==Innervation== | | ==Innervation== |
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| − | The gall bladder is innervated by parasympathetic nerves.
| + | *Parasympathetic nerves |
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| − | ==Species Differences==
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| − | '''Equine'''
| + | ==Histology== |
| − | Equine species have no gallbladder.
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| − | '''Rodents'''
| + | [[Image:Guinea-pig Gallbladder Hsitology.jpg|thumb|right|150px|Histology of the Guinea-pig Gallbladder - Copyright RVC 2008]] |
| | + | *Highly folded mucosa |
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| − | There is no gallbladder in rats.
| + | *Reduced submucosa |
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| − | '''Canine'''
| + | *No lamina muscularis |
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| − | The gall bladder lies opposite the 8th intercostal space. It has the thinnest layers of tunica muscularis.
| + | *Simple columnar epithelium |
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| − | '''Bovine'''
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| − | The bovine gall bladder has the thickest layers of the tunica muscularis. Sheep have a less projecting gall bladder than cows. The gallbladder lies against the 10th or 11th rib.
| + | ==Species Differences== |
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| − | '''[[Avian Digestive Tract - Anatomy & Physiology|Avian]]''' | + | '''Equine''' |
| | + | *The horse has no gallbladder |
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| − | '''Pigeons''' and '''parrots''' lack a gallbladder. | + | '''Canine''' |
| | + | *In some dogs, the gallbladder is so deeply embedded it makes contact with the diaphragm and contacts the pareital surface |
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| − | ==Histology==
| + | '''Rodents''' |
| | + | *Rats do not have a gallbladder |
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| − | [[Image:Guinea-pig Gallbladder Hsitology.jpg|thumb|right|250px|Histology of the Guinea-pig Gallbladder - Copyright RVC 2008]]
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| − | The gall bladder has a highly folded '''mucosa'''. It has a reduced '''submucosa''' and no '''lamina muscularis'''. The gall bladder has a simple columnar epithelium and no glands present.
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| | ==Links== | | ==Links== |
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| − | '''Click here for [[:Category:Gall Bladder and Tract - Pathology|pathology of the Gall Bladder]]'''
| + | [[Liver - gall bladder|Pathology of the Gall Bladder]] |
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| − | {{Template:Learning
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| − | |flashcards = [[Liver - Anatomy & Physiology - Flashcards|Liver & Gall Bladder]]
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| − | |powerpoints = [[Gastrointestinal Tract Histology resource|Histology of the gall bladder - see part 2]]
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| − | |videos = [[Video: Bovine liver potcast|Bovine liver potcast]]<br>[[Video: Bovine liver potcast 2|Bovine liver potcast 2]]<br>[[Video: Ventral view of the pancreas and small intestine potcast|Ventral view of the pancreas and small intestine potcast]]<br>[[Video: Bovine pregnant uterus potcast 2|Bovine pregnant uterus potcast 2]]<br>[[Video: Ovine right-sided abdominal and thoracic dissection|Ovine right-sided abdominal and thoracic dissection]] | |
| − | |Vetstream = [https://www.vetstream.com/canis/Content/Freeform/fre60060.asp Gall bladder disease]
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| − | }}
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| − | ==Webinars==
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| − | <rss max="10" highlight="none">https://www.thewebinarvet.com/gastroenterology-and-nutrition/webinars/feed</rss>
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| − | [[Category:Liver and Gall Bladder - Anatomy & Physiology]]
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| − | [[Category:A&P Done]]
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