ATI LPN
Gastrointestinal System Questions and Answers Questions
Question 1 of 5
Which of the following epithelial types is most closely associated with active secretion at a mucosal surface, as in the stomach lining?
Correct Answer: C
Rationale: Simple columnar epithelium in the stomach secretes mucus and enzymes.
Question 2 of 5
Glandular ducts are typically lined by which type of epithelium?
Correct Answer: D
Rationale: Ducts are typically lined by simple cuboidal to columnar or stratified cuboidal epithelium.
Question 3 of 5
The pancreas is located:
Correct Answer: D
Rationale: The pancreas is an retroperitoneal organ, external to the intestinal wall.
Question 4 of 5
Which the following stains is used to demonstrate mucus (as well as basement membranes and glycogen)?
Correct Answer: C
Rationale: PAS stains polysaccharides like mucus, glycogen, and basement membranes.
Question 5 of 5
Which of the following cell types is characterized by secretory vesicles concentrated in basal cytoplasm, near the basement membrane?
Correct Answer: C
Rationale: Enteroendocrine cells release hormones basally into the bloodstream.