Peritoneum, Chest and Invasive Procedures - Part 1 Flashcards
Mesenteric cyst
A congenital thin-walled cyst located between the leaves of the mesentery
Where is a mesenteric cyst most commonly located?
Small-bowel mesentery
Paracentesis
A cannula or catheter is passed into the abdominal cavity to allow outflow of fluid into a collecting device for diagnostic or therapeutic purposes
What does the peritoneum contain? (4)
- Lymphatics
- Vessels
- Fat
- Nerves
Pouch of Douglas
A pouch formed by the inferior portion of the parietal peritoneum
What are the functions of the peritoneum? (2)
- Secretes serous fluid to reduce friction between structures
- Suspends and enfolds organs
What is the peritoneum?
An extensive serous membrane lining the entire abdominal wall
What is the peritoneum composed of?
2 layers
What are the 2 layers of the peritoneum?
- Parietal
- lines the cavity - Visceral
- covers the organs
Greater omentum
A transparent double fold of peritoneum that spreads like an apron inferiorly to cover most of the abdominopelvic cavity
What does the greater omentum do in trauma cases? (2)
- Seal hernias
2. Wall of infections
What does the greater omentum do?
Keeps the small intestines warm
What is another term for the lesser omentum?
Gastrohepatic omentum
Lesser omentum
Membranous extension from the portal fissure to the diaphragm
What are the organs contained within the peritoneum? (14)
- Appendix
- Cecum
- Duodenal bulb
- GB
- Ileum
- Jejunum
- Liver
- Ovaries
- Sigmoid colon
- Spleen
- Stomach
- Transverse colon
- Upper 1/3rd of the rectum
- Uterine body
Where is the lesser sac located anterior to?
To the pancreas
Where is the lesser sac located posterior to?
To the stomach
What is the lesser sac located between? (2)
- Diaphragm
2. Transverse colon
What does the lesser sac communicate with?
With the subhepatic space through the foramen of Winslow
What is another term for the lesser sac?
Omental Bursa
What is another term for Morison’s Pouch?
Hepatorenal Pouch
Where is Morison’s Pouch located? (2)
- Superior and anterior to the right kidney
2. Posterior to the lateral portion of the right lobe of the liver
Why is the hepatorenal pouch unable to communicate with the subphrenic space?
Because of the right coronary ligament (bare area)
What does Morison’s Pouch communicate with?
With the right paracolic gutter
What is the hepatorenal pouch a common site for?
Fluid to collect
Where are the paracolic gutters located?
Lateral to the colon
What do the paracolic gutters serve as?
Conduits for fluid between the deep pelvis and upper abdomen
Which paracolic gutter is more shallow?
The left one
Which paracolic gutter is the more common route of fluid extension due to less resistance?
The right one
Where is the retrovesicle pouch located? (2)
- Posterior to the urinary bladder
2. Anterior to the rectum
Where is the retrouterine pouch located? (2)
- Posterior to the uterus
2. Anterior to the rectum
What are 2 other names for the retrouterine pouch?
- Posterior cul de sac
2. Pouch of Douglas
Where is the vesicouterine pouch located? (2)
- Anterior to the uterus
2. Posterior to the urinary bladder
What is another term for the vesicouterine pouch?
Anterior cul de sac
Where is prevesical or retropubic space located? (2)
- Anterior to the urinary bladder
2. Posterior to the symphysis pubis
What is another term for prevesical or retropubic space?
Space of Retzius
