Peritoneum Flashcards
What main artery supplies the midgut?
Accessory arteries?
Superior mesenteric
Ileocolic, R colic, Middle colic
What main artery supplies the hind gut?
Accessory arteries?
Inferior mesenteric
L colic, sigmoid branches, superior rectal
What layer has somatic innervation and pain fibers?
Parietal layer
What layer has referred pain and receives autonomic innervation?
Visceral layer
What kind of fibers does visceral peritoneum have?
What is this kind of peritoneum sensitive/insensitive to?
Unmyelinated C-fibers
Sensitive to: stretching and chemical irritation
Insensitive to: touch, heat, cold, laceration
What are the primary Retroperitoneal organs?
Kidneys Ureters Suprarenal glands Gonads Aorta and IVC
What are the secondary Retroperitoneal organs?
Duodenum (asc./desc. and horizontal)
Asc./desc. colon
Pancreas
Upper 2/3 rectum
How are Retroperitoneal organs covered by peritoneum?
By parietal on one side only
How are intraperitoneal organs covered?
Most sides by visceral peritoneum
Suspended by a mesentery
What does THE mesentery attach?
Small intestine to the posterior body wall
Where is ventral mesentery located?
Area around the liver i.e. Respiratory diaphragm to teh duodenum
Where does the lesser omentum develop from?
What parts does it have?
Ventral mesentery
Hepatogastric lig
Hepatoduodenal lig
Where does the greater omentum develop from?
What ligaments does it have?
Dorsal mesentery
Gastrocolic
Gastrophrenic
Gastrosplenic
What is the ligamentum teres hepatis (round ligament of the liver) a remnant of?
Umbilical vein
How is the retro duodenal fossa fold formed?
By inferior mesenteric vein posterior to peritoneum
The median umbilical fold is what fetal remnant?
Urachus
The medial umbilical folds are what fetal remnants?
Obliterated umbilical arteries
The lateral umbilical folds are what fetal remnants?
Inferior epigastric vessels and functional a + v.
What is the falciform ligament a remnant of?
Ventral mesentery
Where is the supravesical fossa?
What is it a site for?
Between median and medial folds
Supravesical hernias
Where is the lateral inguinal fossa located?
Site for what?
Lateral to the lateral umbilical fold
Indirect hernias
Where is the medial inguinal fossa located?
Site for what?
Between medial and lateral umbilical folds
Direct hernia
Area also called inguinal triangle
What divides the greater sac into supra colic and infra colic?
Colon and transverse mesocolon
What is the supra colic region of the greater sac made up of?
Superior to liver and stomach
Anterior to stomach and greater omentum
What pouches are located at the supracolic level?
What may develop?
Subphrenic and subhepatic
Abscesses especially in the right hepatorenal (subhepatic) and right Subphrenic pouches
What makes up the inframesocolic regions?
R and L paracolic gutters lateral to a/d colon
Upper R and lower L parts separated by THE mesentery
What ligament limits the spread of fluid superiorly in the greater sac inframesocolic region?
Phrenicolic lig
How does the lesser sac develop?
What is the communication between the two?
As a diverticulum of the greater sac
Epiploic/omental foramen of Winslow
Where is the superior recess of the lesser sac located?
Posterior to the liver
Where is the inferior recess of the lesser sac located?
Potential space between the 2 layers of the gastrocolic ligament
Where is the splenic recess of the lesser sac located?
Posterior and left of the stomach
Anterior border of the Epiploic foramen?
Portal vein, hepatic artery, bile duct
Posterior border of the Epiploic foramen?
IVC and right crus of diaphragm
Superior border of the Epiploic foramen?
Caudate lobe of liver
Inferior border of the Epiploic foramen?
1st part of duodenum
What can cause an internal hernia?
Minor folds and fossae around duodenum and cecum when abnormally deep
What main artery supplies the foregut?
Accessory arteries?
Celiac trunk
Splenic, L gastric, common hepatic
