ATI LPN
Questions About Gastrointestinal System Questions
Question 1 of 5
You're educating a group of patients at an outpatient clinic about peptic ulcer formation. Which statement is correct about how peptic ulcers form?
Correct Answer: B
Rationale: Acid penetrating unprotected mucosa triggers histamine release, increasing HCl secretion from parietal cells, worsening erosion . Acid isn't the sole cause , pepsin doesn't signal pepsinogen release , and prostaglandins protect, not break down, the lining , making B correct.
Question 2 of 5
What is the typical first-line treatment for an H. pylori infection causing a peptic ulcer?
Correct Answer: B
Rationale: First-line H. pylori treatment includes clarithromycin, amoxicillin, and a PPI, making B correct.
Question 3 of 5
Along most of the GI tract (except for the oral cavity and lower anal canal), the basal boundary of the mucosa is marked by:
Correct Answer: A
Rationale: The muscularis mucosae, a thin smooth muscle layer, separates the mucosa from the submucosa in most of the GI tract.
Question 4 of 5
Adventitia consists of:
Correct Answer: C
Rationale: Adventitia is primarily ordinary connective tissue, lacking epithelium or specialized muscle.
Question 5 of 5
The germinal centers of lymph nodules function as sites where:
Correct Answer: D
Rationale: Germinal centers are where B lymphocytes proliferate in response to antigens.