Ach Lab 2-Peritoneum Flashcards
What is the largest serous cavity in the body?
Peritoneal cavity
What is Ascites?
An abnormal accumulation of fluid in the peritoneal cavity due to some disease process
What are the 3 specializations of peritoneum?
Mesentery
Omentum
Ligament
What is a mesentery made up of?
2 layers of peritoneum
What is an Omentum?
What are the 2?
Folds of peritoneum connecting the stomach to another organ.
Lesser omentum: between the stomach and the liver
Greater omentum: between the stomach and the colon
What are the 3 parts to the greater omentum?
What is it derived from?
Gastrocolic
Gastrosplenic
Gastrophrenic
Dorsal mesentery
What is the lesser omentum derived from?
What are its 2 parts?
Ventral mesentery.
Hepatoduodenal and hepatogastric ligaments
What are the folds of the dorsal mesentery separated by?
Omental bursa (lesser sac)
What do peritoneal ligaments do?
Suspend a less mobile organ from the abdominal wall or attaches it to another organ
What connects the Greater & Lesser Sacs?
Omental (Epiploic) Foramen
What does the entire GI tract develop from?
Gut tube
What mesentery contributes to the falciform ligament?
Ventral
What supplies the foregut?
Celiac trunk
What supplies the midgut?
superior mesenteric artery
what supplies the hindgut?
inferior mesenteric artery
What is an intraperitoneal organ?
an organ sandwiched between layers of vasculature
What is a retroperitoneal organ?
an organ outside of the peritoneal cavity that has peritoneum only on their anterior surface
Where is the lesser sac located in relation to the stomach?
behind it
What are the attachments of the greater omentum?
Greater curvature of the stomach and the transverse colon
What part of the stomach surrounds the cardiac orifice?
Cardia
What is the dilated superior part of the stomach?
Fundus
What part of the stomach attaches to the duodenum?
Pyloric part
When does Jejunum begin?
When the intestine becomes intraperitoneal at the duodenal-jejunal flexure
How would you describe the placement of the ascending and descending colon?
Secondarily retroperitoneal
What is the ligamentum teres a remnant of?
Fetal left umbilical vein
What area of the liver is in contact with the diaphragm with no peritoneum intervening?
Bare area
What does the liver arise from?
Septum transversum (mesenchyme) and an outrgrowth of the gut
Which ligament of the Lesser Omentum contains the portal triad?
Hepatoduodenal ligament
What is the portal triad?
Portal vein
Common bile duct
Hepatic artery proper
What organs are primary retroperitoneal (develop outside peritoneal cavity)?
Kidneys
Suprarenal glands
What are the Iliohypogastric nerve and Ilioinguinal nerve derived from?
Which one is more superior?
L1
Iliohypogastric
Which of the following is true regarding development of the gut?
- Liver is non-functional
- Portal triad comes to lie within the dorsal mesentery?
- The sigmoid colon is retroperitoneal
- The stomach rotates around its longitudinal axis such that the ventral border becomes the greater curvature
- The superior mesenteric artery is the axis of rotation of the midgut loop
- The superior mesenteric artery is the axis of rotation of the midgut loop.
What anatomical feature would you use to identify the colon?
- circular folds
- epiploic appendages
- falciform ligament
- the mesentery
- Rugae
- Epiploic appendages
The artery of the midgut is the:
Superior mesenteric artery
What structure forms a boundary of the bare area of the liver?
Coronary ligament
