Disposition of peritoneum (1.6) Flashcards
What are the boundaries of the greater peritoneal sac? the lesser peritoneal sac?
Greater peritoneal sac: from diaphragm to pelvis
Lesser peritoneal sac (omental bursa): Lies behind the stomach, liver, lesser omentum and part of the greater omentum…infront of the pancreas
What causes the formation of the lesser sac?
The rotation of the gut
What is the connection between the greater and lesser sacs?
Eiploic (omental) foramen
A primarily retroperitoneal organ develops entirely outside of the peritoneum: what organs are primarily retroperitoneal?
Kidneys, suprarenal glands, ureters, urinary bladder
Aorta and inferior vena cava
Lumbar plexus and branches
A secondarily retroperitoneal organ develops within the peritoneal cavity and later becomes retroperitoneal: what organs are secondarily retroperitoneal?
Most of duodenum, ascending and descending colon, and rectum
Where are the peritoneal recesses? What is the effect of the peritoneal recesses?
The peritoneal recesses are spaces and channels between the peritoneum and the organs it drapes over
These spaces allow pooling/flow of ascitic fluids…as well as spread of cancer cells and infection
Where are the paracolic gutters?
The paracolic gutters lie within peritoneal sac
LATERAL to the ascending and descending colon
Where are the Infracolic spaces? Are both spaces open?
The infracolic spaces lie on either side of The Mesentery
No…the right infracolic space is closed off
Where is the hepatorenal recess? What is interesting about it?
The hepatorenal recess is bound by the liver, right kidney, duodenum, and colon
The hepatorenal recess is the lowest point in the peritoneal cavity when a person is supine
Where are subphrenic recesses? What needs to be worried about forming in the subphrenic recesses?
The subphrenic recesses are bound by the liver, falciform ligament, and anterior abdominal wall
Abscesses that form in the subphrenic recesses can penetrate the diaphragm
Where is the paraduodenal fossa? What can potentially happen in the paraduodenal fossa?
The paraduodenal fossa is at the duodenum/jejunum junction; formed inferiorly by the peritoneal folds
The intestine can strangulate in the paraduodenal fossa
The parietal peritoneum has what kind of innervation?
Somatic afferent fibers (intercostal, subcostal, phrenic, 1st lumbar)
What is the parietal peritoneum sensitive to?
Pain
Touch
Temp
Pressure
The visceral peritoneum has what kind of innervation?
Visceral afferent that run with the ANS
What is the visceral peritoneum sensitive to?
Distention…difficult to localize
