ATI LPN
NCLEX Questions Gastrointestinal System Questions
Question 1 of 5
Which of the following regions of the GI tract is characterized by a thick mucosa densely packed with tubular glands containing a variety of cell types?
Correct Answer: B
Rationale: The stomach has thick mucosa with diverse glandular cells (parietal, chief, etc.).
Question 2 of 5
The length of intestinal villi is about:
Correct Answer: B
Rationale: Villi are approximately 0.5-1 mm long, enhancing absorption.
Question 3 of 5
Cells which secrete HCl into the stomach are called:
Correct Answer: C
Rationale: Parietal cells secrete hydrochloric acid.
Question 4 of 5
The principal function for intestinal enteroendocrine cells is:
Correct Answer: B
Rationale: Enteroendocrine cells secrete hormones like CCK and secretin.
Question 5 of 5
The mucosal surface of the stomach is protected from digestion by:
Correct Answer: B
Rationale: Surface mucous cells secrete a protective mucus barrier.