ATI LPN
Gastrointestinal System Questions and Answers Questions
Question 1 of 5
In the stomach lining, the parietal cells release _________ and the chief cells release __________ which both play a role in peptic ulcer disease.
Correct Answer: D
Rationale: Parietal cells secrete hydrochloric acid (HCl), and chief cells secrete pepsinogen, which is activated to pepsin by HCl. Both contribute to ulcer formation by eroding the mucosa, making D correct.
Question 2 of 5
Which of the following bacteria is a major causative factor for peptic ulcers and can be detected using a urea breath test?
Correct Answer: C
Rationale: H. pylori is a major ulcer cause and detectable by urea breath test, making C correct.
Question 3 of 5
Lamina propria differs from dermis by having:
Correct Answer: C
Rationale: Lamina propria has more lymphocytes for mucosal immunity, while dermis has denser collagen and more adipocytes.
Question 4 of 5
For an organ lying within a body cavity, the tissue which forms the deepest layer (i.e., farthest from the inner core or lumen of the organ) is called the:
Correct Answer: B
Rationale: The serosa, a mesothelial layer, covers organs within body cavities like the peritoneal cavity.
Question 5 of 5
The epithelium lining tonsillar crypts may be obscured by numerous cells migrating through it. These cells are:
Correct Answer: B
Rationale: Lymphocytes migrate through tonsillar epithelium as part of immune surveillance.