ATI LPN
Gastrointestinal System NCLEX Questions Questions
Question 1 of 5
Which of the following regions of the GI tract is characterized by simple columnar epithelium on the mucosal surface which apparently consists of a single cell type, without goblet cells?
Correct Answer: B
Rationale: The stomach's surface epithelium is simple columnar mucus-secreting cells, lacking goblet cells.
Question 2 of 5
Duodenal (Brunner's) glands are located:
Correct Answer: B
Rationale: Brunner's glands are in the submucosa, secreting alkaline mucus.
Question 3 of 5
Which of the following is characteristic of mucus-secreting cells?
Correct Answer: D
Rationale: All features support mucus synthesis and secretion.
Question 4 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.
Question 5 of 5
The principal secretory product for the epithelial cells forming pancreatic islets (of Langerhans) is:
Correct Answer: D
Rationale: Islet cells secrete hormones like insulin and glucagon.