ATI LPN
Gastrointestinal System NCLEX Questions Questions
Question 1 of 5
Which of the following epithelial types is most closely associated with active absorption at a mucosal surface, as in small intestine and colon?
Correct Answer: C
Rationale: Simple columnar epithelium in the intestines supports absorption with microvilli.
Question 2 of 5
In which region of the GI tract is the longitudinal muscle of the muscularis arranged into distinct longitudinal bundles (taenia)?
Correct Answer: D
Rationale: The colon has taenia coli, distinct longitudinal muscle bands.
Question 3 of 5
Duodenal (Brunner's) glands are located:
Correct Answer: B
Rationale: Brunner's glands are in the submucosa, secreting alkaline mucus.
Question 4 of 5
Which of the following is characteristic of mucus-secreting cells?
Correct Answer: D
Rationale: All features support mucus synthesis and secretion.
Question 5 of 5
Which of the following cell types is characterized by a large nucleus (sometimes two nuclei) surrounded by prominent eosinophilic cytoplasm containing very many mitochondria and an intracellular canaliculus?
Correct Answer: B
Rationale: Parietal cells have mitochondria-rich, eosinophilic cytoplasm for HCl secretion.