17. Omental Bursa: Stomach Reflected Flashcards
Identify 1. (which surface is it?)
- Stomach (posterior surface)
Identify 9 (+ peritoneal relation)
- Left suprarenal (adrenal) gland (retroperitoneal)
Identify 2 -> 3
- Probe in omental foramen
- Gallbladder
Identify 4
- Descending (2nd) part of duodenum
Identify 5 - 6
- Head of pancreas (retroperitoneal)
- Transverse mesocolon
Identify 7
- Left colic (splenic) flexure
Identify 8
- Spleen
What is retroperitoneal space?
The area in the back of the abdomen behind the peritoneum (the tissue that lines the abdominal wall and covers most of the organs in the abdomen).
(The organs in the retroperitoneum include the adrenal glands, aorta, kidneys, esophagus, ureters, pancreas, rectum, and parts of the stomach and colon.)
Identify peritoneal relations
Identify peritoneal relations
The parietal peritoneum lines (1)___
-> It is derived from (2)___ in the embryo.
- the internal surface of the abdominopelvic wall.
- somatic mesoderm
The visceral peritoneum invaginates to cover (1)___
-> It is derived from (2)___ in the embryo.
- the majority of the abdominal viscera.
- splanchnic mesoderm
The parietal peritoneum lines (1)___
-> It is derived from (2)___
- the internal surface of the abdominopelvic wall.
- somatic mesoderm in the embryo.
What are the 2 main groups of the abdominal viscera?
Intraperitoneal and retroperitoneal organs.2. somatic mesoderm in the embryo.
What are Intraperitoneal organs? Give 3 examples
Intraperitoneal organs are enveloped by visceral peritoneum, which covers the organ both anteriorly and posteriorly.
Examples include the stomach, liver and spleen.
What are retroperitoneal organs?
Retroperitoneal organs are not associated with visceral peritoneum
-> they are only covered in parietal peritoneum, and that peritoneum only covers their anterior surface.
retroperitoneal organs can be further subdivided into two groups based on their embryological development
-> What are these 2 groups?
- Primarily retroperitoneal organs
- Secondarily retroperitoneal organs
What are primarily retroperitoneal organs?
List the organs
- Primarily retroperitoneal organs developed and remain outside of the parietal peritoneum.
- The oesophagus, rectumand kidneysare all primarily retroperitoneal.
What are secondarily retroperitoneal organs?
- Secondarily retroperitoneal organs were initially intraperitoneal, suspended by mesentery.
- only their anterior surface is covered with peritoneum.
(Through the course of embryogenesis, they became retroperitoneal as their mesentery fused with the posterior abdominal wall.)
Examples of secondarily retroperitoneal organs?
the ascending and descending colon.
A useful mnemonic to help in recalling which abdominal viscera are retroperitoneal is SAD PUCKER
→ List the organs and structures based on this.
- S = Suprarenal(adrenal) Glands
- A = Aorta/IVC
- D =Duodenum (except the proximal 2cm, the duodenal cap)
- P = Pancreas (except the tail)
- U = Ureters
- C = Colon (ascending and descending parts)
- K = Kidneys
- E = (O)esophagus
- R = Rectum
What is mesentery?
double layer of visceral peritoneum
A probe enters the lesser sac through ___
the epiploic foramen of Winslow.
Within the hepatoduodenal ligament one finds ___ (3 structures)
- the proper hepatic artery
- the common bile duct
- the portal vein.
A probe enters the lesser sac through the epiploic foramen of Winslow. → Anterior to the epiploic foramen lies the (1)___, which is a portion of the (2)___ (the other part is the hepatogastric ligament).
- hepatoduodenal ligament
- lesser omentum
A probe enters the lesser sac through the epiploic foramen of Winslow. Anterior to the epiploic foramen lies the hepatoduodenal ligament, which is a portion of the lesser omentum (the other part is the ___).
hepatogastric ligament
The duodenum is primarily retroperitoneal or secondarily retroperitoneal?
the duodenum is secondarily retroperitoneal.
