1. In the name of Allah

2. Abdominal cavity
Peritoneal cavity
Greater sac
Lesser sac

3. Peritoneum Peri (around)+ teinein (to stretch)
Largest serous membrane:
Forms peritoneal cavity which closed in male.
Separated from fascia transversalis by extraperitoneal fat.
Consists of a single layer of flat mesothelial cells which supported by loose connective tissue.
Mesothelial cells may transform into fibroblast after surgery and inflammation.

4. Peritoneum Parietal Visceral
The peritoneum which suspends viscera called:
Mesentery (meso-)
Omentum (epiploon)
Peritoneal lig.
Meso- and lig. provide pathways for vessels, nerve and lymphatics
Intraperitoneal
Retroperotoneal

5. Peritonium Dorsal mesentery Dorsal mesogastrium Dorsal mesoduodenum
Mesentery proper
(dorsal mesentery of jejunum & ileum)
Dorsal mesocolon
Ventral mesentery
Lesser omentum
Falciform lig

6. Peritonium Peritoneal folds derived from ventral mesentery
Falciform lig.
Ligamentum teres
Coronary lig.
Triangular ligs.

7. peritonium Peritoneal folds derived from ventral mesentery
Lesser omentum
Hepatogastric
Hepatoduodenal
- Free border (right lateral)

9. peritonium Peritoneal fold derived from dorsal mesentery
Dorsal mesogastrium
Greater omentum
Gastrocolic
Gastrosplenic lig.
Splenorenal

10. peritonium Peritoneal fold derived from dorsal mesentery
Transverse mesocolon
Passing on;
2nd part of duodenum
pancreas,
Lt. kidney
to the left colic (splenic) flexure
Phrenicocolic lig

11. peritonium Peritoneal fold derived from dorsal mesentery
Mesentery proper
From left side of L2
To Rt. Sacroiliac joint
Crosses 3rt part of duodenum, aorta, IVC, Rt ureter, Rt. psoas

12. peritonium Peritoneal fold derived from dorsal mesentery
Mesentery proper
root 15 cm
intestinal border …?
Depth 20cm

13. peritonium
Peritoneal fold
derived from dorsal
mesentery
mesoappendix

14. peritonium Peritoneal fold derived from dorsal mesentery
Sigmoid mesocolon
V shape
Left arm over psoas & Rt. At the level of S3

16. peritonium Peritoneum of the lower anterior abdominal wall
Raised into five ridges
1- Median umblical fold (urachus)
2,3- Medial umblical folds (umblical artereis)
4,5- Lateral umblical folds
(inferior epigastric arteries)

17. peritonium Peritoneum of the lower anterior abdominal wall
Forms 3 fossae on each side:
1- supravesical
2- medial inguinal
3- lateral inguinal
Direct and indirect
hernia?

18. peritonium
Peritoneum of the pelvis

19. peritonium Peritoneum of the pelvis: ♂ rectovesical pouch
♀ recto-uterine and vesico-uterine

21. Peritoneal cavity Supramesocolic compartment Right subphrenic
Right subhepatic (hepatorenal)
Lesser sac
Left subphrenic
Left subhepatic

22. Peritoneal cavity Lesser sac In front - lesser omentum - Stomach
Behind
- Post. Abdo. Wall
- Pancreas

23. Peritoneal cavity Lesser sac Left Spleen Gastrosplenic lig.
Splenorenal lig.
Right
Epiploic foramen

24. Peritoneal cavity Lesser sac Above - Diaphragm Below - Greater omentum
- Gastrocolic lig.

25. Peritoneal cavity Post.; I.V.C Ant.; Lesser omentum Hepatic art.
Eppiloic Foramen
Post.; I.V.C
Ant.;
Lesser omentum Hepatic art.
Bile duct
Portal vien

26. Peritoneal cavity Superior: caudate process Inferior:
Eppiloic Foramen
Superior:
caudate process
Inferior:
first part of duodenum

28. Peritoneal cavity inframesocolic compartment 1-right infracolic space
2-left infracolic space
3-paracolic gutter

29. Peritoneal cavity Duodenal recesses Sup. Duodenal Inf. Duodenal
Paraduodenal
Retroduodenal

30. Peritoneal cavity Cecal recesses Sup. Ileocecal Inf. Ileocecal
Retrocecal

31. Peritoneal cavity
Intersigmoid recess

32. Retroperitoneal spaces ?

33. Peritonium functions
Facilitates movement of viscera to glide easily on one another
Concerned with secretion and absorption (peritoneal dialysis)
Localizes infection
Plays an important role in suspending the various organs
Serves as a means of conveying blood and lymph vessels and nerves
Stores large amounts of fat
Promotes healing
Promotes healing and even regeneration of nervous system
Angiogenesis

35. In the name of Allah

36. Peritoneum development
Bilaminar germ disc
Epiblast
Hypoblast

37. Peritoneum development
Trilaminar germ disc
Ectoderm
Mesoderm
Endoderm

38. Peritoneum development
Mesoderm
Paraxial
Intermediat
lateral plate

39. Peritoneum development
lateral plate
Somatic or Parietal
Splanchnic or visceral mesoderm

40. Peritoneum development

41. Peritoneum development
Dorsal mesentery
Dorsal mesogastreum
Dorsal mesoduodenum
Mesentery proper
(dorsal mesentery of
jejunum & ileum)
Dorsal mesocolon

42. Peritoneum development
Ventral mesentery
Derived from septum transversum
Divided into
Lesser omentum
Falciform lig

44. Peritoneum development

45. Peritoneum development

46. Peritoneum development9

51. Peritoneum development10

52. Peritoneum development11

53. Peritoneum development12

54. Peritoneum development16