Peritoneum Flashcards
Layers of Peritoneum and their origins
- Pareital- pain sensitive via Somatopleuric layer of lateral plate mesoderm
- Visceral- splanchoplueric layer. only pain senstive when distended/ischemic
Regions of Abdominal Cavity
Right hypochondrium, epigastrium , left hypochondrium
Right lumbar, umblical, left lumbar
right iliac fossa, hypogastrium, left ilac fossa
Contents of right hypochondrium
Liver
gallbladder
Contents of epigastrium
stomach
duodenum
pancreas
Contents of left hypochondrium
stomach
spleen
left colic flexure
Right lumbar
right kidney
ureter
ascending colon
umblical
Aorta
inf vena cava
small intestine
stomach
Left lumbar
left kidney
ureter
descending colon
Right iliac fossa
cecum
appendix
hypogastrium
bladder
small intestine
Lesser Sac and boundaries
Large recess of peritoneal cavity behind stomach, lesser omentum and caudate lobe and liver
- Anteriorly- peritoneum covering caudate lobe and stomach, post. layer of lesser omentum, 2nd layer of greater omentum
- Posteriorly- 3rd layer og greataer omentum, transverse mesocolon, peritoneum
What is the greater omentum
Large fold of peritoneum hanging down the greater curvature of the stomach
posterior two layers attactch to the pancreas
fourth layer attaches to the tranverse colon and mesocolon
Functions of the greater omentum
- fat storage
- protection
- prevention of spread of infection
Police man of the abdomen is known as
Greater omentum
Contents of greater omentum
Gastroepiploic vessels and fat
Lesser Omentum
Smaller fold of peritoneum extending from the lesser curvature of the stomach
Inferiorly-stomach
superiorly-liver
Contents of lesser omentum in the right free margin
Proper hepatic artery portal vein bile duct lymph nodes hepatic nerve plexus
Contents of the upper part of lesser omentum
gastric vessels
gastric lymph nodes
gastric nerves
Whats the epiplloic foramen
Communication between the greater and lesser sac at the level of T12
Boundaries of epiploic foramen
Anteriorly- right free margin of lesser omentum
Posteriorly- T12, inf vena cana and right adrenal
Superiorly- Caudate process of liver
Inferiorly- 1st part of duodenum
Whats the lesser sac
Large recess of peritoneal cavity behind stomach
Boundaries of lesser sac
Anteriorly- Peritoneum covering caudate liver, post, layer of lesser omentum. 2nd layer of greater omentum
Posteriorly- 3rd layer of greater omentum, peritoneum covering transverse colon
Subdivisons of lesser sac
- superior recess
2, inferior recess
3, splenic recess
Why is trangulated internal hernia approached via thegreater omentum
Epiploic foramen can not be enlarged due to important structures arround it
posterior gastric ulcer may perforate causing fluid to leak into
LEsser sac via the epiploic foramen
Parietal peritoneum of abdomen is supplied by
t7-l1
parietal peritoneum of the abdomen is supplied by
obturator nerve
the commonest site of subphrenic abcesses in supine position is
hepatorenal space
due to infection from gall bladder, appendix and other organs
pus tends to collect where in standing postion
floor of rectouterine/rectovesicle pouch
pain of foregut structures is felt in
epigastric area
pain of midgut organs is felt in
periumblical area
pain for hindgut is felt in
suprapubic area
Morrisons pouch
Pouch between posterior surface of liverm right kidney and hepatic flexure
