Peritoneal Cavity and Peritoneum Flashcards
What does parietal peritoneum line
Lines abdominal wall
What innervates parietal peritoneum
Somatic nerves
Can parietal peritoneum be seen with the naked eye
Yes
Describe pain for the parietal peritoneum
Sharp, severe and well localised to the abdominal wall
What does visceral peritoneum cover
Abdominal viscera
Can visceral peritoneum be seen by the naked eye
No. It is adhered to the surface of the viscera
What is visceral peritoneum innervated by
Visceral somatic nerves
What does the pain from visceral peritoneum feel like
Can be severe
Dull and diffuse
May be perceived as nausea or distension
What lies between the parietal and visceral peritoneum
Peritoneal cavity
What should lie in the peritoneal cavity
Thin film of peritoneal fluid
Allows the viscera to slide freely alongside each other
Define intraperitoneal
Almost completely covered by peritoneum
Define retroperitoneal
Posterior to the peritoneum. Only covered by peritoneum on their anterior surface
Define secondary retroperitoneal
Organs were intraperitoneal in early development but became ‘stuck down’ onto the posterior abdominal wall
Define mesenteries
Folds in the peritoneum that contain fat
What do mesenteries suspend
Small intestine and parts of the large intestine from the posterior abdominal wall
What is embedded in mesenteries
Arteries that supply the intestine (from the abdominal aorta)
Veins that drain the gut
What are the greater and lesser omenta
Folds of peritoneum that are usually fatty and connect the stomach to other organs
Where is the greater omentum
Hangs from the great curvature of the stomach and lies superficial to the small intestine
What does the lesser omentum connect
The stomach and dudoneum to the liver
What is embedded in the free edge of the lesser omentum
Portal triad
Where is the median umbilical fold
Midline
What does the median umbilical fold represent
Remnant of the urachus
What is the urachus
An embryological structure that connected the bladder to the umbilicus
Where do you find the medial umbilical folds
Lateral to the median umbilical fold
What do the medial umbilical folds represent
Remnants of the paired umbilical arteries
Which returned venous blood to the placenta in foetal life
Where do you find the lateral umbilical folds
Lateral to the medial umbilical folds
What lies deep to the lateral umbilical folds
Inferior epigastric arteries (supply the anterior abdominal wall)
Where do you find the lesser sac
Space that lies posterior to the stomach and anterior to the pancreas
Where do you find the greater sac
Remaining part of the peritoneal cavity after the lesser sac
How do the greater and lesser sac communicate to each other
Epiploic foramen
