GIT-Peritoneum, Stomach, Liver, Biliary Tract & Spleen Flashcards
What is another term to describe a single continuous membrane of simple squamous epithelium?
Mesothelium
What does the parietal peritoneum lines?
Abdominopelvic cavity
What does the visceral peritoneum lines?
Covering the organs (e.g. Bowel)
What usually stimulates the visceral peritoneum?
Stretching and chemical irritation
Where are pain from foregut, midgut andf hindgut derivatives usually experienced respectiviely?
Foregut: Epigastric region
Midgut: Umbilical region
Hindgut: Hypogastric / pubic region
The peritoneal cavity is a ________ within the layer of the peritoneum
potential space
In females, there is ____ between vagina > uterine cavity > uterine tubes: potential pathway for _____
In females, there is external communication between vagina > uterine cavity > uterine tubes: potential pathway for infection
Omentum is a ____ extension or fold of ____
Omentum is a double layered extension or fold of peritoneum
Where does the lesser omentum extend from?
Liver to the lesser curvature of the stomach
A double layered peritoneal fold
Where does the greater omentum extend from?
Greater curvature of the stomach and the transverse colon
- wraps around inflammed organ in the abdomen and protects other organs from it
What is a ligament?
A fold connecting one organ with another or one organ with any area of the body wall.
Mesentry is a ____ connecting an organ to the ____ it’s also a conduit for ____, nerves and ____ supplying viscera
Mesentry is a fold connecting an organ to the posterior abdominal wall it’s also a conduit for vessels, nerves and lympathics supplying viscera
Composed of 2 layers of peritoneum
Peritoneum is a ____, ____ serous. membrane - lines the abdominal cavity & invests the viscera
Continuous, transparent
What runs within the lesser omentum near its free edge?
Portal vein
Bile duct
Hepatic artery
PBH, same as anterior boundaries of the omental foramen (Portal Triad)
Intraperitoneal: Structures are suspended from the abdomina wall by ____
eg. most of small intestines
Mesenteries
Retroperitoneal: Structures e.g. kidneys and great vessels that lie between ____ peritoneum and ____
Retroperitoneal: Structures e.g. kidneys and great vessels that lie between parietal peritoneum and** abdominal wall**
What are some organs that became secondarily retroperitoneal?
ORgans that originally had a mesentry, but became secondarily retroperitoneal when the mesentry fused with the body wall.
Duodenem (except the first part)
Pancrease (except the tail part)
Colon (except cecum, transverse colon and sigmoid colon)
Omental foramen (Epiploic foramen) is the passage between the ____ and the ____ allowing communication between these two spaces
greater sac and lower sac
What are the boundaries of the omental foramen?
Anterior: Bile duct, hepatic artery and portal vein (portal triad)
Posterior: IVC and diaphragm
Superior: Caudate lobe of the liver
Inferior: First part of the duodenum
What is another name for the lower sac?
Omental bursa
When does the esophagus pierce through the diaphragm?
T10
Oesophagus: 10 letters
The stomach lies between the ____ and the ____ in the epigastric, umbilical and ____ regions of the abdomen
The stomach lies between the esophagus and the small intestine in the epigastric, umbilical and left hypochondriac regions of the abdomen
What are the four main regions of the stomach?
Cardia > Fundus > Body > Pylorus
What are the two orifice of the stomach?
Cardiac orifice (Gsatroesophageal junction)
Pyloric orifice
____ receives food from teh oesophagus and is mainly involved in ____ digestion
Stomach receives food from the oesophagus and is mainly involved in enzymatic digestion
Briefly describe the realation of the stomach (Anterior, Posterior and Superior)
Anterior: Left lobe of the liver and diaphragm anteriorly
Superior: Left dome of diaphragm superiorly
Posterior: Lesser sac (omental bursa) and pancreas posteriorly
Rests on the:
- Spleen
- Left kidney and adrenal
- Splenic artery
- Pancreas
- Transverse mesocolon
The interior of the stomach is lined by gastric mucosa which is thrown into mucosal folds ( ________ ) when contracted
Rugae
What does the foregut include and what is the arterial supply?
Distal 3rd of esophagus to the 2nd part of the duodenum at the entrance of the bile duct (Major duodenal papilla)
Arterial supply: Coeliac trunk