ATI LPN
NCLEX Questions Gastrointestinal System Questions
Question 1 of 5
Which of the following regions of the GI tract is not characterized by simple columnar epithelium on the mucosal surface?
Correct Answer: D
Rationale: The anal canal has stratified squamous epithelium, unlike the others with simple columnar.
Question 2 of 5
The parotid gland and the pancreas are both compound acinar glands, served by a branching duct system. Morphological differences between parotid and pancreas include which of the following?
Correct Answer: D
Rationale: All listed features distinguish the pancreas (endocrine islets, centroacinar cells) from the parotid (adipocytes).
Question 3 of 5
The length of intestinal villi is about:
Correct Answer: B
Rationale: Villi are approximately 0.5-1 mm long, enhancing absorption.
Question 4 of 5
Cells which secrete HCl into the stomach are called:
Correct Answer: C
Rationale: Parietal cells secrete hydrochloric acid.
Question 5 of 5
The principal function for intestinal enteroendocrine cells is:
Correct Answer: B
Rationale: Enteroendocrine cells secrete hormones like CCK and secretin.