Difference between revisions of "Gall Bladder - Anatomy & Physiology"

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<big><center>[[Liver - Anatomy & Physiology|'''BACK TO THE LIVER''']]</center></big>
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{{OpenPagesTop}}
 
 
 
==Introduction==
 
==Introduction==
  
The gallbladder stores bile produced in the [[Liver - Anatomy & Physiology|liver]]. Bile is important in the digestion of lipids.
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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 gallbladder forms as an outgrowth of the bile duct, as a secondary hollow at the posterior edge of the original hepatic rudiment. The gallbladder 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]]
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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==
 
==Structure==
  
[[Image:Canine Gallbladder Anatomy.jpg|thumb|right|150px|Location of the Canine Gallbladder - Copyright RVC 2008]]
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[[Image:Canine Gallbladder Anatomy.jpg|thumb|right|250px|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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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
 
 
 
*Partly free
 
 
 
  
 
==Function==
 
==Function==
  
*Stores bile
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The gall bladder stores bile and concentrates bile by absorption through the folded mucosal wall.
 
 
*Concentrates bile by absorption through the folded mucosal wall
 
 
 
  
 
==Innervation==
 
==Innervation==
  
*Parasympathetic nerves
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The gall bladder is innervated by parasympathetic nerves.
  
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==Species Differences==
  
==Histology==
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'''Equine'''
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Equine species have no gallbladder.
  
[[Image:Guinea-pig Gallbladder Hsitology.jpg|thumb|right|150px|Histology of the Guinea-pig Gallbladder - Copyright RVC 2008]]
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'''Rodents'''
*Highly folded mucosa
 
  
*Reduced submucosa
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There is no gallbladder in rats.
  
*No lamina muscularis
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'''Canine'''
  
*Simple columnar epithelium
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The gall bladder lies opposite the 8th intercostal space. It has the thinnest layers of tunica muscularis.
  
*No glands
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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'''
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'''Pigeons''' and '''parrots''' lack a gallbladder.
*The horse has no gallbladder
 
  
'''Rodents'''
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==Histology==
*Rats do not have a gallbladder
 
  
'''Canine'''
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[[Image:Guinea-pig Gallbladder Hsitology.jpg|thumb|right|250px|Histology of the Guinea-pig Gallbladder - Copyright RVC 2008]]
*In some dogs, the gallbladder is so deeply embedded it makes contact with the diaphragm and contacts the parietal surface
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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.
  
*Lies opposite the 8th intercostal space
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==Links==
  
*Thinest layers of tunica muscularis
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'''Click here for [[:Category:Gall Bladder and Tract - Pathology|pathology of the Gall Bladder]]'''
  
'''Bovine'''
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{{Template:Learning
*Thickest layers of tunica muscularis
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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]]
*Sheep have a less projecting gall bladder than cows
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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]]
 
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|Vetstream = [https://www.vetstream.com/canis/Content/Freeform/fre60060.asp Gall bladder disease]
==Links==
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}}
  
[[Liver - gall bladder|Pathology of the Gall Bladder]]
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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]]

Latest revision as of 15:07, 25 November 2022


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 cystic 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

Location of the Canine Gallbladder - Copyright RVC 2008

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 thinnest layers of tunica muscularis.

Bovine

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

Pigeons and parrots lack a gallbladder.

Histology

Histology of the Guinea-pig Gallbladder - Copyright RVC 2008

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.

Links

Click here for pathology of the Gall Bladder


Gall Bladder - Anatomy & Physiology Learning Resources
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Vetstream
To reach the Vetstream content, please select
Canis, Felis, Lapis or Equis
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Flashcards
Test your knowledge using flashcard type questions
Liver & Gall Bladder
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Videos
Selection of relevant videos
Bovine liver potcast
Bovine liver potcast 2
Ventral view of the pancreas and small intestine potcast
Bovine pregnant uterus potcast 2
Ovine right-sided abdominal and thoracic dissection
Category:Histology PowerPointsPowerPoint.png
PowerPoint
Selection of relevant PowerPoint tutorials
Histology of the gall bladder - see part 2


Webinars

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