ATI LPN
Gastrointestinal System Quiz Questions Questions
Question 1 of 5
Which of the following regions of the GI tract is characterized by short tubular invaginations (crypts or pits) which are not lined by dividing, differentiating cells?
Correct Answer: B
Rationale: Gastric pits in the stomach lack stem cells, unlike intestinal crypts.
Question 2 of 5
Intestinal crypts of Lieberkühn are located:
Correct Answer: A
Rationale: Crypts of Lieberkühn are mucosal glands in the small intestine.
Question 3 of 5
In H&E stained tissue sections, the mucus-containing secretory vesicles in mucous cells typically appear:
Correct Answer: D
Rationale: Mucus vesicles stain poorly with H&E, appearing clear.
Question 4 of 5
Which of the following cell types is characterized by extensive basal rough endoplasmic reticulum, a supranuclear Golgi apparatus and apical zymogen vesicles?
Correct Answer: A
Rationale: Chief cells produce pepsinogen with these features.
Question 5 of 5
The principal secretory product for cells of Brunner's (duodenal) glands is:
Correct Answer: B
Rationale: Brunner's glands secrete alkaline mucus to neutralize acid.