Line 1: |
Line 1: |
− | <big><center>[[Liver - Anatomy & Physiology|'''BACK TO THE LIVER''']]</center></big>
| + | {{OpenPagesTop}} |
| + | ==Introduction== |
| | | |
− | ==Introduction==
| + | 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 '''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== | | ==Structure== |
| | | |
− | *Lies between the right medial and quadrate lobes of the [[Liver - Anatomy & Physiology|liver]]
| + | [[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. |
| | | |
− | *Partly attached
| + | ==Function== |
| | | |
− | *Partly free
| + | The gall bladder stores bile and concentrates bile by absorption through the folded mucosal wall. |
| | | |
| + | ==Innervation== |
| | | |
− | ==Function==
| + | The gall bladder is innervated by parasympathetic nerves. |
| | | |
− | *Stores bile
| + | ==Species Differences== |
| | | |
− | *Concentrates bile by absorption through the folded mucosal wall
| + | '''Equine''' |
| + | Equine species have no gallbladder. |
| | | |
| + | '''Rodents''' |
| | | |
− | ==Innervation==
| + | There is no gallbladder in rats. |
| | | |
− | *Parasympathetic nerves
| + | '''Canine''' |
| | | |
| + | The gall bladder lies opposite the 8th intercostal space. It has the thinnest layers of tunica muscularis. |
| | | |
| + | '''Bovine''' |
| | | |
− | ==Histology==
| + | 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. |
| | | |
| + | '''[[Avian Digestive Tract - Anatomy & Physiology|Avian]]''' |
| | | |
| + | '''Pigeons''' and '''parrots''' lack a gallbladder. |
| | | |
− | ==Species Differences== | + | ==Histology== |
| | | |
− | '''Equine''' | + | [[Image:Guinea-pig Gallbladder Hsitology.jpg|thumb|right|250px|Histology of the Guinea-pig Gallbladder - Copyright RVC 2008]] |
− | *The horse has no gallbladder
| + | 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. |
| | | |
− | '''Canine'''
| + | ==Links== |
− | *In some dogs, the gallbladder is so deeply embedded it makes contact with the diaphragm and contacts the pareital surface
| |
− | | |
− | '''Rodents'''
| |
− | *Rats do not have a gallbladder
| |
| | | |
| + | '''Click here for [[:Category:Gall Bladder and Tract - Pathology|pathology of the Gall Bladder]]''' |
| | | |
− | ==Links== | + | {{Template:Learning |
| + | |flashcards = [[Liver - Anatomy & Physiology - Flashcards|Liver & Gall Bladder]] |
| + | |powerpoints = [[Gastrointestinal Tract Histology resource|Histology of the gall bladder - see part 2]] |
| + | |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] |
| + | }} |
| | | |
− | [[Liver - gall bladder|Pathology of the Gall Bladder]] | + | ==Webinars== |
| + | <rss max="10" highlight="none">https://www.thewebinarvet.com/gastroenterology-and-nutrition/webinars/feed</rss> |
| + | [[Category:Liver and Gall Bladder - Anatomy & Physiology]] |
| + | [[Category:A&P Done]] |