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Abdominal & Peritoneal Cavity
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Extent of abdominal cavity
4
th
intercostal space
Pelvic inlet
What lines the abdominal cavity?
Parietal peritoneum
Origin of greater omentum
Derived from developing
dorsal mesentery
Origin of lesser omentum
Derived from developing
ventral mesentary
Lateral mesoderm splits into:
Somatic mesoderm
(Forms parietal peritoneum)
Splanchnic mesoderm
(Forms CT / gut m. / visceral peritoneum)
Mesentaries are formed by _______
2 layers of splanchnic mesoderm (visceral peritoneum)
Mesothelium
Lining of squamous cells in the peritoneum that secrete a serous fluid
What forms the mesenteries, omenta, and abdominal ligaments?
Visceral peritoneum
Viscera are found _______ the abdominal cavity and ______ the peritoneal cavity
Within abdominal cavity
Outside peritoneal cavity
Intraperitoneal organs are surrounded or nearly surrounded by _______ peritoneum
Visceral
How are retroperitoneal organs covered?
Covered by peritoneum on their anterior surface only
How do organs become secondarily retroperitoneal
Organs lose their mesenteries during development and are pushed against posterior body wall
Blood supply / innervation of parietal peritoneum
Same as the body wall
Blood supply / innervation to the visceral peritoneum
Same as the organs it invests
Suspends liver from diaphragm
Ant. / Post. Coronary ligament
Divisions of peritoneal cavity
Greater sac
Lesser sac (omental bursa)
Opening into the omental bursa
Epiploic foramen (foramen of winslow)
Posterior wall of epiploic foramen
IVC (peritoneally-covered)
Anterior wall of epiploic foramen
Hepatoduodenal ligament
Hepatogastric ligament
Forms lesser omentum
Bounded laterally by hepatoduodenal ligament
Gastrocholic ligament
Forms greater omentum
Hepatoduodenal ligament
Doorway to omental bursa
Contains the
portal triad
Gastrolienal ligament
(gastrosplenic ligament)
Attaches spleen to the stomach
Contains BVs that go from the splenic a. into greater curve of stomach
Lienorenal ligament
(splenorenal ligament)
Attaches spleen to left kidney
Where would fluid released from pancreatitis or stomach ulcer collect? Why?
Omental bursa
Pancreas is behind the lesser omentum
Adult remnants of the ventral mesentary
Falciform ligament
(contains ligamentum teres of liver)
Lesser omentum
(free margin is hepatoduodenal ligament)
Adult remnants of the dorsal mesentary
Greater omentum
- gastrocholic ligament
- gastrolienal ligament
- Lienorenal ligament
Mesentary proper - of small intestines
Sigmoid mesocolon
Author
mnm2186
ID
35180
Card Set
Abdominal & Peritoneal Cavity
Description
Exam 3
Updated
2010-09-19T22:50:55Z
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