GI / LIVER PATHOLOGY Flashcards
Is the epithelial structure of the oesophageus absorptive?
No
Where would you find the stratified squamous epithelium?
Oesophageus
Is the epithelial surface of the stomach absorptive?
Yes
What type of cells does the stomach contain?
Parietal cells
What are the three muscle layers in the stomach?
Longitudinal, circular, oblique
What is the duodenum lined with?
Simple columnar epithelial cells
What are the muscle layers of the duodenum?
Longitudinal and circular
What is the jejunum and illeum lined with?
Simple columnar epithelium
What are the four histological layers of the GI tract?
Mucosa, submucosa, musclularis externa, serosa and adventitia
What is Crohn’s disease?
Inflammation anywhere from the mouth to anus, but is discontinuous
What is ulcerative colitis?
Inflammation of the colon, beginning from the rectum and usually stopping at the large intestine
What happens in Crohn’s disease and ulcerative colitis?
Macrophages and neutrophils attack the intestinal wall and the inflammatory responses causes damages to the intestinal walls
How many layers of intestinal wall are damaged in Crohn’s disease?
3 layers - transmural inflammation
How many layers of the intestinal wall is damaged in ulcerative colitis?
Two - mucosa and submucosal
Where is the Peyers Patch?
In the ileum and resides in submucosa
