Peritoneal Cavity & Mesenteries Flashcards
What is the parietal peritoneum?
covering that lines inner abdominal wall surfaces
What is the visceral peritoneum?
covering that lines organs
What are the subdivisions of the peritoneal cavity? How do they communicate?
Greater sac and lesser sac
Communicate via epiploic foramen
Where is the location of the lesser sac?
It is between the lesser and greater omentum
Where is the greater sac?
Below the lesser sac, encompasses everything else
What is contained in the supracolic compartment? (3)
stomach, liver, spleen
What is contained in the infracolic compartment?
small intestine, ascending/descending colon
What separates the supracolic and infracolic compartments?
The transverse megacolon
What are the boundaries of the epiploic foramen?
anterior - hepatoduodenal ligament
posterior - peritoneum covering IVC
inferior - 1st part of duodenum
superior - peritoneal reflection from liver to IVC
What is a mesentery?
A double-layered peritoneal membrane structure attached to the posterior abd. wall and the jejunum and ileum. Contains arteries, veins, nerves, lymphatics
What are the functions of the peritoneum? (3)
Produces peritoneal fluid Minimizes friction (cuz fluid) Resists infection (produces Abs, leukocytes, localizes infection)
Where is the lesser omentum, and what does it attach to?
Superior to the greater omentum.
Extends from liver to lesser curvature of the stomach (hepatogastric l.) and first part of duodenum (hepatoduodenal l.)
Where is the greater omentum, and what does it attach to?
Inferior to lesser omentum
Extends from greater curvature of stomach, 1st part of duodenum and to transverse colon
Where does the hepatoduodenal ligament attach?
the 1st part of the duodenum to liver
Where does hepatogastric ligament attach?
liver to stomach
Where does gastrosplenic ligament attach?
Stomach to hilum of spleen
Where does gastrophrenic ligament attach?
Stomach to diaphragm
Where does gastrocolic ligament attach?
Greater curvature of stomach to transverse colon
What are the attachments of the transverse mesocolon?
Transverse mesocolon is attached to transverse colon and divides the body cavity into supra and infra-colic regions
What is a peritoneal fold?
a fold of peritoneum (duh)
What is a peritoneal recess?
a pouch of peritoneum formed by a peritoneal fold
What is a peritoneal fossa?
Small pockets in the peritoneal cavity bounded by peritoneal recesses (thanks Google)
Where is the omental bursa? What does it do?
It’s the cavity formed by the lesser and greater omentum. It functions as a serous bursa for the stomach
What are the boundaries of the omental foramen?
anterior - hepatoduodenal ligament
posterior - peritoneum covering IVC
superior - caudate process of caudate lobe of liver
Inferior - peritoneum covering commencement of duodenum and hepatic artery
left lateral - gastrosplenic and splenorenal ligaments
