Difference between revisions of "Peritoneal Cavity - Anatomy & Physiology"

Latest revision as of 17:51, 4 January 2023

Introduction

The peritoneum is the serous membrane that lines the abdominal cavity. It lies directly beneath the abdominal musculature (rectus abdominis and transverse abdominis). It is a type of loose connective tissue and is covered by mesothelium. Extensions of the peritoneum form the mesenteries, omenta and ligaments that support the abdominal contents. The peritoneum produces fluid to lubricate abdominal viscera. The peritoneum also enhances immune responses and walls off infection in the abdomen to prevent peritonitis.

Development

In the early embryo, the primitive gut tube is suspended by the dorsal and ventral mesogastria. The mesogastria divide the embryo into two cavities, called the left and right coelomic cavities. The ventral mesogastrium atrophies caudal to the pylorus of the stomach and cranial to the rectum. This gives the entire small intestine and most of the large intestine large scope for expansion and rotation. It also allows the left and right coelomic cavities to coalesce forming one cavity; the peritoneal cavity. Peritoneal structures develop from the dorsal and ventral mesogastria.

Structure & Histology

Lining the abdomen is a thin layer of loose connective tissue covered by a single layer of mesothelial cells. The layer of mesothelial cells is referred to as the peritoneum. Collectively, the connective tissue and peritoneum are referred to as the serosa. Mesothelial cells are simple squamous and of mesodermal origin, they have microvilli on their surface and are very fragile but regenerate very quickly. A small amount of fibroelastic tissue is present within the connective tissue layer to provide support. There are two layers of peritoneum lining the abdomen. Lining the abdominal wall is the parietal layer, lining the abdominal viscera is the visceral layer. The small space within these two layers is called the peritoneal cavity.

NB: In reality there are no viscera located in the peritoneal cavity. However the cavity created by the serosa is also confusingly referred to as the peritoneal cavity, and contains most abdominal contents.

A small evagination extends into the thorax along the right side of the oesophagus. The peritoneum also evaginates to extend into the inguinal canals. Fat is often stored beneath the peritoneum. Many species have lymphoid tissue aggregates and fixed phagocytes in the omentum that are not covered by mesothelial cells. The peritoneum is smooth and clear in the healthy animal.

NB: Post mortem change and autolysis result in increased volumes of red-brown fluid in the abdomen, not associated with other pathology, nor roughening of surfaces of organs or peritoneum.

The peritoneal cavity is complete in the male, but a potential communication with the exterior exists in the female at the opening of the oviduct.

Peritoneal Fluid

A small quantity of peritoneal fluid is produced by mesothelial cells. It fills the potential space formed by the two layers of peritoneum and allows the two layers to slide over each other freely. Peritoneal fluid is also produced as a transudate which coats the serosal surface of viscera to facilitate frictionless movement e.g. during peristalsis. It is in equilibrium with plasma but doesn't contain high molecular weight molecules like fibrinogen. The fluid is constantly being produced and resorbed through the large surface area of the peritoneum, for this reason drugs are sometimes administered by intraperitoneal injection. Bacterial toxins are also absorbed readily and can cause inflammation of the peritoneum; peritonitis.

Function

Peritoneum secretes a small volume of clear fluid for lubrication. It provides a route for entry of blood and nerve and lymphatics. There is high fibrinolytic activity to protect against the formation of adhesions. Inflammed portions of the peritoneum adhere to each other and may become organised and permanent. This may help to wall of infections and bring leuckocytes to the site of infection. This trait is taken advantage of in surgery when serosal surfaces are often turned in when closing an incision.

Types of Peritoneum

The peritoneum doubles up to form the following suspensory structures: Mesentery, from viscera to the dorsal abdominal wall. Omentum, from the stomach to other viscera and ligament, from viscera not involved in digestion to the abdominal wall or to other viscera that are not involved in digestion (e.g.ligaments of the liver).

Mesenteries

The entire alimentary tract is attached to the dorsal body wall by mesentery, a derivative of the dorsal mesogastrium. Mesoduodenum attaching the duodenum to the abdominal roof contains the right lobe of the pancreas. Great Mesentery extends from the jejunum and ileum to the abdominal roof and contains the cranial abdominal artery and vein, mesenteric lymph nodes and mesenteric plexus. Mesocolon attaches the colon and mesorectum the rectum to the abdominal roof. The female reproductive tract is also suspended by peritoneal derivatives. The broad ligament consisting of mesometrium, mesosalpinx and mesovarium, from ovary, oviduct, uterus, cervix and cranial vagina to the dorsal body wall, contains ovarian artery, uterine branch of the ovarian artery, uterine artery, ovarian vein, uterine vein and uterine lymph node (mare).

Omenta

During development in the region of the stomach, a fold of the dorsal mesogastrium becomes extended into a curtain - like structure called the greater omentum. It originates from the dorsal wall of the abdomen and attaches to the greater curvature of the stomach. The potential space between the two sheets is called the omental bursa. It covers the jejunal mass on the ventral abdominal wall. The opening to the omental bursa is called the epiploic foramen. The lesser omentum runs from the lesser curvature of the stomach to the liver.

Ligaments

The gastrophrenic ligament - from the greater curvature of the stomach to the crura of the diaphragm.

The gastrosplenic ligament - part of the greater omentum. Connects the spleen to the stomach.

The hepatoduodenal ligament - remnant of the ventral mesogastrium. From the cranial part of the duodenum to the liver. The bile duct runs within it.

The nephrosplenic ligament (renosplenic ligament) - In the horse, from spleen to left kidney.

The round ligament - part of the broad ligament. From the ovary to the inguinal ring.

The suspensory ligament - from the ovary to the abdominal wall.

The proper ligament of the ovary - from the ovary to the oviduct.

The ligaments of the Liver.

Intraperitoneal Organs

Organs are intraperitoneal if they are enclosed by a fold of visceral peritoneum. Intraperitoneal organs include: the [Monogastric Stomach - Anatomy & Physiology|stomach]], small intestine, large intestine, liver, gall bladder, pancreas and spleen.

Retroperitoneal Organs

Organs are described as retroperitoneal if they are located behind the parietal peritoneum. Retroperitoneal organs include: the kidneys, adrenal glands, ureters, urinary bladder, part of the oesophagus, rectum, ovaries, uterus, aorta and caudal Vena Cava.

Links

Click here for information on the pathology of the peritoneal cavity

Peritoneal Cavity - Anatomy & Physiology Learning Resources
Vetstream To reach the Vetstream content, please select	Canis, Felis, Lapis or Equis
Flashcards Test your knowledge using flashcard type questions	peritoneal cavity flashcards
Videos Selection of relevant videos	The Small and Large intestine of the Ruminant The Bovine Liver The Canine Abdomen Lateral View of the Equine Abdomen The Equine Liver Left Sided topography of the Equine abdomen Left Sided topography of the Equine abdomen The Feline Abdomen Left sided topography of the Ovine Abdomen and Thorax Right sided topography of the Ovine Abdomen Structure of the ruminant forestomachs
Full Text Articles Full text articles available from CAB Abstract (CABI log in required)	Greater omentum: the surgeons' friend, no longer a forgotten organ. Saifzadeh, S.; Iranian Veterinary Surgery Association, Kermen, Iran, Iranian Journal of Veterinary Surgery, 2008, Supplement 2, pp 39-47, 60 ref.

Webinars

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@@ Line 1: / Line 1: @@
-<big><center>[[Alimentary - Anatomy & Physiology|'''BACK TO ALIMENTARY - ANATOMY & PHYSIOLOGY''']]</center></big>
 ==Introduction==
-The peritoneum is the serous membrane that lines the abdominal cavity. It lies directly beneath the abdominal musculature (rectus abdominis and transverse abdominis). It is a type of '''loose connective tissue''' and is covered by '''mesothelium'''. Extensions of the peritoneum form the mesentries, omenta and ligaments that support the abdominal contents. The peritoneum produces fluid to lubricate abdominal viscera. The peritoneum also enhances immune responses and walls off infection in the abdomen to prevent peritonitis.
+The peritoneum is the serous membrane that lines the abdominal cavity. It lies directly beneath the abdominal musculature (''rectus abdominis'' and ''transverse abdominis''). It is a type of '''loose connective tissue''' and is covered by '''mesothelium'''. Extensions of the peritoneum form the mesenteries, omenta and ligaments that support the abdominal contents. The peritoneum produces fluid to lubricate abdominal viscera. The peritoneum also enhances immune responses and walls off infection in the abdomen to prevent [[Peritonitis|peritonitis]].
 ===Development===
-In the early embryo, the primitive gut tube is suspended by the dorsal and ventral mesogastria. The mesogastria divide the embryo into two cavities, called the left and right coelomic cavities. The ventral mesogastrium atrophies caudal to the pylorus of the [[Forestomach - Anatomy & Physiology|stomach]] and cranial to the [[Rectum - Anatomy & Physiology|rectum]]. This gives the entire small intestine and most of the large intestine large scope for expansion and rotation. It also allows the left and right coelomic cavities coalesce. This forms one cavity; '''the peritoneal cavity'''.
+In the early embryo, the primitive gut tube is suspended by the dorsal and ventral mesogastria. The mesogastria divide the embryo into two cavities, called the left and right coelomic cavities. The ventral mesogastrium atrophies caudal to the pylorus of the [[Monogastric Stomach - Anatomy & Physiology|stomach]] and cranial to the [[Rectum - Anatomy & Physiology|rectum]]. This gives the entire [[Small Intestine Overview - Anatomy & Physiology|small intestine]] and most of the [[Large Intestine - Anatomy & Physiology|large intestine]] large scope for expansion and rotation. It also allows the left and right coelomic cavities to coalesce forming one cavity; '''the peritoneal cavity'''. Peritoneal structures develop from the dorsal and ventral mesogastria.
-Peritoneal structures develop from the dorsal and ventral mesogastria.
 ==Structure & Histology==
-*Lining the abdomen is a thin layer of loose connective tissue covered by a single layer of [[Mesothelial cells|mesothelial cells]]. The layer of mesothelial cells is referred to as the '''peritoneum'''. Collectively, the connective tissue and peritoneum are referred to as the '''serosa'''.
+Lining the abdomen is a thin layer of loose connective tissue covered by a single layer of [[Mesothelial cells|mesothelial cells]]. The layer of mesothelial cells is referred to as the '''peritoneum'''. Collectively, the connective tissue and peritoneum are referred to as the '''serosa'''. Mesothelial cells are simple squamous and of mesodermal origin, they have microvilli on their surface and are very fragile but regenerate very quickly. A small amount of fibroelastic tissue is present within the connective tissue layer to provide support. There are two layers of peritoneum lining the abdomen. Lining the abdominal wall is the '''parietal layer''', lining the abdominal viscera is the '''visceral layer'''. The small space within these two layers is called the '''peritoneal cavity'''.
-**Mesothelial cells are simple squamous and of mesodermal origin.
-***Have microvilli on their surface.
+''NB: In reality there are no viscera located in the peritoneal cavity. However the cavity created by the '''serosa''' is also confusingly referred to as the peritoneal cavity, and contains most abdominal contents.''
-***Very fragile but regenerate very quickly.
-*A small amount of fibroelastic tissue is present within the connective tissue layer to provide support.
+A small evagination extends into the thorax along the right side of the [[Oesophagus -  Anatomy & Physiology|oesophagus]]. The peritoneum also evaginates to extend into the inguinal canals. Fat is often stored beneath the peritoneum. Many species have [[Lymphatic System Overview - Anatomy & Physiology|lymphoid tissue]] aggregates and fixed phagocytes in the omentum that are not covered by mesothelial cells. The peritoneum is smooth and clear in the healthy animal.
-*There are two layers of peritoneum lining the abdomen.
-**Lining the abdominal wall is the '''parietal layer'''.
+''NB: Post mortem change and autolysis result in increased volumes of red-brown fluid in the abdomen, not associated with other pathology, nor roughening of surfaces of organs or peritoneum.''
-**Lining the abdominal viscera is the '''visceral layer'''.
-**The small space within these two layers is called the '''peritoneal cavity'''.
+The peritoneal cavity is complete in the male, but a potential communication with the exterior exists in the female at the opening of the [[Oviduct - Anatomy & Physiology|oviduct]].
-**''NB: In reality there are no viscera located in the peritoneal cavity. However the cavity created by the '''serosa''' is also confusingly referred to as the peritoneal cavity, and contains most abdominal contents.''
-*A small evagination extends into the thorax along the right side of the [[Oesophagus - Anatomy & Physiology|oesophagus]].
-*The peritoneum evaginates to extend into the inguinal canals.
-*Fat is often stored beneath the peritoneum.
-*Many species have lymphoid tissue aggregates and fixed phagocytes in the omentum that are not covered by mesothelial cells
-*The peritoneum is smooth and clear in the healthy animal.
-*''NB: Post mortem change and autolysis result in increased volumes of red-brown fluid in the abdomen, not associated with other pathology, no roughening of surfaces of organs or peritoneum.''
-*The peritoneal cavity is complete in the male, but a potential communication with the exterior exists in the female at the opening of the uterine tubes.
 ===Peritoneal Fluid===
-*A small quantity of peritoneal fluid is produced by mesothelial cells.
-*It fills the potential space formed by the two layers of peritoneum and allows the two layers to slide over each other freely.
+A small quantity of peritoneal fluid is produced by mesothelial cells. It fills the potential space formed by the two layers of peritoneum and allows the two layers to slide over each other freely. Peritoneal fluid is also produced as a [[transudate]] which coats the serosal surface of viscera to facilitate frictionless movement e.g. during peristalsis. It is in equilibrium with plasma but doesn't contain high molecular weight molecules like fibrinogen. The fluid is constantly being produced and resorbed through the large surface area of the peritoneum, for this reason drugs are sometimes administered by intraperitoneal injection. Bacterial toxins are also absorbed readily and can cause inflammation of the peritoneum; ''[[Peritonitis|peritonitis]]''.
-*Peritoneal fluid is also produced as a transudate which coats the serosal surface of viscera to facilitate frictionless movement e.g. during peristalsis.
-*It is in equilibrium with plasma but doesn't contain high molecular weight molecules like fibrinogen.
-*The fluid is constantly being produced and resorbed through the large surface area of the peritoneum.
-**For this reason drugs are sometimes administered by intraperitoneal injection.
-**Bacterial toxins are also absorbed readily and can cause inflammation of the peritoneum; ''[[Peritoneal cavity - inflammatory|peritonitis]]''
 ==Function==
-*Secretes a small volume of clear fluid for lubrication.
-*Provides a route for entry of blood and nerve and lymphatics.
+Peritoneum secretes a small volume of clear fluid for lubrication. It provides a route for entry of blood and nerve and lymphatics. There is high fibrinolytic activity to protect against the formation of adhesions. Inflammed portions of the peritoneum adhere to each other and may become organised and permanent. This may help to wall of infections and bring leuckocytes to the site of infection. This trait is taken advantage of in surgery when serosal surfaces are often turned in when closing an incision.
-*High fibrinolytic activity to protect against the formation of adhesions.
-**Inflammed portions of the peritoneum adhere to each other and may become organised and permanent. This may help to wall of infections and bring leuckocytes to the site of infection.
-**This trait is taken advantage of in surgery when serosal surfaces are often turned in when closing an incision.
 ==Types of Peritoneum==
-The peritoneum doubles up to form the following suspensory structures:
+The peritoneum doubles up to form the following suspensory structures: '''Mesentery''', from viscera to the dorsal abdominal wall.
-*Mesentery: from viscera to the dorsal abdominal wall.
+'''Omentum''', from the [[Monogastric Stomach - Anatomy & Physiology|stomach]] to other viscera and '''ligament''', from viscera not involved in digestion to the abdominal wall ''or'' to other viscera that are not involved in digestion (e.g.ligaments of the [[Liver - Anatomy & Physiology|liver]]).
-*Omentum: from the stomach to other viscera.
-*Ligament: from viscera not involved in digestion to the abdominal wall ''or'' to other viscera that are not involved in digestion (e.g.ligaments of the [[Liver - Anatomy & Physiology|liver]]).
 ===Mesenteries===
-*The entire alimetary tract is attached to the dorsal body wall by mesentery, a derivative of the dorsal mesogastrium.
-**'''Mesoduodenum''' from the duodenum to the abdominal roof. Contains the right lobe of the pancreas.
+The entire alimentary tract is attached to the dorsal body wall by mesentery, a derivative of the dorsal mesogastrium. '''Mesoduodenum''' attaching the [[Duodenum - Anatomy & Physiology|duodenum]] to the abdominal roof contains the right lobe of the [[Pancreas - Anatomy & Physiology|pancreas]]. '''Great Mesentery''' extends from the [[Jejunum - Anatomy & Physiology|jejunum]] and [[Ileum - Anatomy & Physiology|ileum]] to the abdominal roof and contains the cranial abdominal artery and vein, mesenteric lymph nodes and mesenteric plexus. '''Mesocolon''' attaches the [[Colon - Anatomy & Physiology|colon]]  and  '''mesorectum''' the [[Rectum - Anatomy & Physiology|rectum]] to the abdominal roof. The [[:Category:Female Reproduction|female reproductive tract]] is also suspended by peritoneal derivatives. The '''broad ligament''' consisting of mesometrium, mesosalpinx and mesovarium, from [[Ovary - Anatomy & Physiology|ovary]], [[Oviduct - Anatomy & Physiology|oviduct]], [[Uterus - Anatomy & Physiology|uterus]], [[Cervix - Anatomy & Physiology|cervix]] and cranial [[Vagina and Vestibule - Anatomy & Physiology|vagina]] to the dorsal body wall, contains ovarian artery, uterine branch of the ovarian artery, uterine artery, ovarian vein, uterine vein and uterine [[Lymph Nodes - Anatomy & Physiology|lymph node]] (mare).
-**'''Great Mesentery''' from the jejunum and ileum to the abdominal roof. Contains the cranial abdominal artery and vein, mesenteric lymph nodes and mesenteric plexus.
-**'''Mesocolon''' from the colon to the abdominal roof.
-**'''Mesorectum''' from the rectum to the abdominal roof.
-*The female reproductive tract is also suspended by peritoneal derivatives.
-**'''Broad Ligament''' consisting of mesometrium, mesosalpinx and mesovarium. From ovary, oviduct, uterus, cervix and cranial vagina to the dorsal body wall. Contains ovarian artery, uterine branch of the ovarian artery, uterine artery, ovarian vein, uterine vein and uterine lymph node (mare).
 ===Omenta===
-*During development in the region of the [[Forestomach - Anatomy & Physiology|stomach]], a fold of the dorsal mesogastrium becomes extended into a curtain - like structure called the '''greater omentum'''.
-**Originates from the greater curvature of the [[Forestomach - Anatomy & Physiology|stomach]] and attaches to the proximal part of the duodenum.
+During development in the region of the [[Monogastric Stomach - Anatomy & Physiology|stomach]], a fold of the dorsal mesogastrium becomes extended into a curtain - like structure called the '''greater omentum'''. It originates from the dorsal wall of the abdomen and attaches to the greater curvature of the stomach. The potential space between the two sheets is called the '''omental bursa'''. It covers the [[Jejunum - Anatomy & Physiology|jejunal mass]] on the ventral abdominal wall. The opening to the omental bursa is called the '''epiploic foramen'''. The '''lesser omentum''' runs from the lesser curvature of the [[Monogastric Stomach - Anatomy & Physiology|stomach]] to the [[Liver - Anatomy & Physiology|liver]].
-**Potential space between the two sheets is called the omental bursa.
-**Covers the jejunal mass on the ventral abdominal wall.
-**Opening to the omental bursa is called the epiploic foramen.
-*The '''lesser omentum''' runs from the lesser curvature of the [[Forestomach - Anatomy & Physiology|stomach]] to the [[Liver - Anatomy & Physiology|liver]].
 ===Ligaments===
-*'''Gastrophrenic Ligament''' - from the greater curvature of the stomach to the crura of the diaphragm.
-*'''Gastrosplenic Ligament''' - part of the greater omentum. Connects the spleen to the stomach.
+The '''gastrophrenic ligament''' - from the greater curvature of the [[Monogastric Stomach - Anatomy & Physiology|stomach]] to the crura of the diaphragm.
-*'''Nephrosplenic Ligament''' (renosplenic ligament) - In the horse - from spleen to left kidney.
-*'''Round Ligament''' - part of the broad ligament. From the ovary to the inguinal ring.
+The '''gastrosplenic ligament''' - part of the greater omentum. Connects the [[Spleen - Anatomy & Physiology|spleen]] to the [[Monogastric Stomach - Anatomy & Physiology|stomach]].
-*'''Suspensory Ligament''' - from the ovary to the abdominal wall.
-*'''Proper Ligament of the ovary''' - from the ovary to the oviduct.
+The '''hepatoduodenal ligament''' - remnant of the ventral mesogastrium. From the cranial part of the [[Duodenum - Anatomy & Physiology|duodenum]] to the [[Liver - Anatomy & Physiology|liver]]. The bile duct runs within it.
-*Ligaments of the [[Liver - Anatomy & Physiology| Liver]]
+The '''nephrosplenic ligament''' (renosplenic ligament) - In the horse, from [[Spleen - Anatomy & Physiology|spleen]] to [[Urinary System Overview - Anatomy & Physiology#Upper Urinary Tract|left kidney]].
+The '''round ligament''' - part of the broad ligament. From the [[Ovary - Anatomy & Physiology|ovary]] to the inguinal ring.
+The '''suspensory ligament''' - from the [[Ovary - Anatomy & Physiology|ovary]] to the abdominal wall.
+The '''proper ligament of the [[Ovary - Anatomy & Physiology|ovary]]''' - from the [[Ovary - Anatomy & Physiology|ovary]] to the [[Oviduct - Anatomy & Physiology|oviduct]].
+The '''ligaments of the [[Liver - Anatomy & Physiology| Liver]]'''.
 ==Intraperitoneal Organs==
-*Organs are intraperitoneal if they are enclosed by a fold of visceral peritoneum.
-*Intraperitoneal organs include:
+Organs are intraperitoneal if they are enclosed by a fold of visceral peritoneum. Intraperitoneal organs include: the [Monogastric Stomach - Anatomy & Physiology|stomach]], [[Small Intestine Overview - Anatomy & Physiology|small intestine]], [[Large Intestine - Anatomy & Physiology|large intestine]], [[Liver - Anatomy & Physiology|liver]], [[Gall Bladder - Anatomy & Physiology|gall bladder]], [[Pancreas - Anatomy & Physiology|pancreas]] and [[Spleen - Anatomy & Physiology|spleen]].
-**[[Forestomach - Anatomy & Physiology|Stomach]]
-**[[Small Intestine - Anatomy & Physiology|Small Intestine]]
-**[[Large Intestine - Anatomy & Physiology|Large Intestine]]
-**[[Liver - Anatomy & Physiology|Liver]]
-**[[Gall Bladder - Anatomy & Physiology|Gall Bladder]]
-**[[Pancreas - Anatomy & Physiology|Pancreas]]
-**[[Spleen - Anatomy & Physiology|Spleen]]
 ==Retroperitoneal Organs==
-*Organs are described as retroperitoneal if they are located behind the parietal peritoneum.
-*Retroperitoneal organs include:
-**[[Urinary System - Anatomy & Physiology|Kidneys]]
-**[[Endocrine System - Adrenal Glands - Anatomy & Physiology|Adrenal glands]]
-**[[Ureters - Anatomy & Physiology|Ureter]]
-**[[Bladder - Anatomy & Physiology|Urinary Bladder]]
-**Part of [[Oesophagus - Anatomy & Physiology|Oesophagus]]
-**[[Rectum - Anatomy & Physiology|Rectum]]
-**[[Female Reproductive Tract -The Ovary - Anatomy & Physiology|Ovaries]]
-**[[Female Reproductive Tract -The Uterus - Anatomy & Physiology|Uterus]]
-**Aorta
-**Caudal Vena Cava
+Organs are described as retroperitoneal if they are located behind the parietal peritoneum. Retroperitoneal organs include: the [[Urinary System Overview - Anatomy & Physiology|kidneys]], [[Adrenal Glands - Anatomy & Physiology|adrenal glands]], [[Ureters - Anatomy & Physiology|ureters]], [[Urinary Bladder - Anatomy & Physiology|urinary bladder]], part of the [[Oesophagus - Anatomy & Physiology|oesophagus]], [[Rectum - Anatomy & Physiology|rectum]], [[Ovary - Anatomy & Physiology|ovaries]], [[Uterus - Anatomy & Physiology|uterus]], aorta and caudal Vena Cava.
+==Links==
-==Links==
+'''Click here for information on the [[:Category:Peritoneal Cavity - Pathology|pathology of the peritoneal cavity]]'''
+{{Template:Learning
+|flashcards = [[Peritoneal_cavity_- Anatomy & Physiology_-_Flashcards|peritoneal cavity flashcards]]
+|videos = [http://stream2.rvc.ac.uk/Anatomy/bovine/Pot0048.mp4 The Small and Large intestine of the Ruminant]<br>[http://stream2.rvc.ac.uk/Anatomy/bovine/Pot0061.mp4 The Bovine Liver]<br>[http://stream2.rvc.ac.uk/Anatomy/canine/Pot0036.mp4 The Canine Abdomen]<br>[http://stream2.rvc.ac.uk/Anatomy/equine/Pony_abdomen.mp4 Lateral View of the Equine Abdomen]<br>[http://stream2.rvc.ac.uk/Anatomy/equine/pot0228.mp4 The Equine Liver]<br>[http://stream2.rvc.ac.uk/Frean/Pony/left_topography.mp4 Left Sided topography of the Equine abdomen]<br>[http://stream2.rvc.ac.uk/Frean/Pony/left_topography.mp4 Left Sided topography of the Equine abdomen]<br>[http://stream2.rvc.ac.uk/Anatomy/feline/pot0357.mp4 The Feline Abdomen]<br>[http://stream2.rvc.ac.uk/Frean/sheep/LeftSideTopography.mp4 Left sided topography of the Ovine Abdomen and Thorax]<br>[http://stream2.rvc.ac.uk/Frean/sheep/RightSideTopography.mp4 Right sided topography of the Ovine Abdomen]<br>[http://stream2.rvc.ac.uk/Frean/sheep/RuminantStomachStructure.mp4 Structure of the ruminant forestomachs]
+|full text = [http://www.cabi.org/cabdirect/FullTextPDF/2009/20093073709.pdf  '''Greater omentum: the surgeons' friend, no longer a forgotten organ.''' Saifzadeh, S.; Iranian Veterinary Surgery Association, Kermen, Iran, Iranian Journal of Veterinary Surgery, 2008, Supplement 2, pp 39-47, 60 ref.]
+|Vetstream = [https://www.vetstream.com/canis/Content/Disease/dis00671.asp Peritonitis]
+}}
+==Webinars==
+<rss max="10" highlight="none">https://www.thewebinarvet.com/gastroenterology-and-nutrition/webinars/feed</rss>
-<big><center>[[Alimentary - Anatomy & Physiology|'''BACK TO ALIMENTARY - ANATOMY & PHYSIOLOGY''']]</center></big>
+[[Category:Alimentary System - Anatomy & Physiology]]
+[[Category:Peritoneal Cavity]]
+[[Category:A&P Done]]