Peritoneum Flashcards
Peritonealized organs
completely covered with peritoneum and associated with mesentery
stomach, spleen, parts 1 and 4 of duod, jejunum, ileum, transverse and sigmoid colon
Primary retroperitoneal organs
posterior to peritoneum, no mesentery
kidney, ureters, suprarenal glands, aorta IVC
secondary retroperitoneal
originally peritonealized organs that are pushed and fused with the body wall.
associated with fusion fascia
most of duodenum, ascending and descending colon, pancreas
Peritonitis
inflammation of peritoneum (due to organ inflam, surgery, trauma, etc)
parietal layer is innervated by somatic nerves—>well localized somatic pain
visceral layer is innervated by autonomics (stretch and chemical irritation fibers)
Dorsal mesentery
gives rise to mesoesphagus, greater omentum, splenorenal, phrenicocolic lig, mesentery proper, mesoappendix, transverse mesocolon, sigmoid mesocolon
Greater omentum
attached to greater curvature of stomach
contains the gastrocolic, gastrosplenic, and gastrophrenic ligaments
phrenicocolic ligaments
attaches the diaphragm to L colic flexure
derived from dorsal mesentery
Mesentery proper
attaches to the small intestine
Ventral mesentery
associated with liver development
forms the lesser omentum, falciform ligament, coronary ligaments, triangular ligaments
Lesser omentum
from lesser curvature/duo—:>liver
hepatogastric and hepatoduodenal ligaments
falciform ligament
peritoneal attachment of the liver to the anterior body all, contains the ligamentum teres hepatis ( formerly the umbilical vein)
coronary ligaments
peritoneal attachments of liver to inferior diaphragm
Triangular ligament
where anterior an posterior coronary ligaments meet
Lesser sac
cavity posterior to stomach and lesser omentum
connected to the greater sac via the epiploic foramen (winslow)
Superior recess of the lesser sac
formed by the border with the diaphragm
inferior recess of the lesser sac
b/w the two layers of the greater omentum
greater sac
cavity that lies anterior to the stomach divided by the transverse colon into the supracolic and infracolic compartments
supracolic compartment contents
superior to transverse mesocolon
contains the stomach, liver, spleen, GB
infracolic compartment contents
inferior to the transverse mesocolon
contains the small intestine, ascending colon, descending colon
divided into L and R by the mesentery proper
boundaries of the epiploic foramen
anterior: hepatoduodenal ligament
posterior: IVC
superior: liver
inferior: first part of duodenum
Ascites
exs fluid in the peritoneal cavity (cirrhosis and portal HTN, kidney failure, CHF, ulcer, internal bleeding)
fluid tends to pool in the hepatorenal and subphrenic recesses
Celiac trunk level
TV12
superior mesenteric a. level
L1
Inferior mesenteric a. level
L3
