GI GI Disorders and Diseases

Question 1

Which of the following best characterizes Crohn's disease compared to ulcerative colitis?

Accepted Answer

Can affect any segment of the GI tract with skip lesions

Answer

Crohn's disease is a transmural inflammation that can involve any part of the GI tract from mouth to anus with characteristic skip lesions.

Question 2

A patient with celiac disease who ingests gluten will show damage primarily to which intestinal structure?

Accepted Answer

Intestinal villi

Answer

Celiac disease causes immune-mediated villous atrophy in the small intestine, reducing absorptive surface area and leading to malabsorption.

Question 3

Zenker's diverticulum is a pulsion diverticulum that forms at which location?

Accepted Answer

Pharyngoesophageal junction (Killian's triangle)

Answer

Zenker's diverticulum protrudes posteriorly through Killian's triangle between the thyropharyngeus and cricopharyngeus muscles.

Question 4

Which condition is associated with the triad of esophageal dysmotility, esophageal dilatation, and failure of the lower esophageal sphincter to relax?

Accepted Answer

Achalasia

Answer

Achalasia is caused by degeneration of myenteric plexus neurons, leading to impaired LES relaxation and aperistalsis of the esophageal body.

Question 5

Helicobacter pylori infection is most strongly associated with ulcers in which location?

Accepted Answer

Duodenal bulb (first part of duodenum)

Answer

H. pylori colonizes the gastric antrum and is the leading cause of duodenal ulcers, especially in the duodenal bulb.

Gastrointestinal GI Practice Practice Test

Gastrointestinal GI Practice Practice Test

GI GI Disorders and Diseases