ATI LPN
Gastrointestinal System Quiz Questions Questions
Question 1 of 5
Permanent folds in the wall of the intestine, containing a core of submucosa, are called:
Correct Answer: B
Rationale: Plicae circulares are permanent folds in the small intestine with a submucosal core.
Question 2 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 3 of 5
Ducts may be distinguished from secretory tissue because cells lining ducts:
Correct Answer: D
Rationale: Duct cells lack secretory vesicles, focusing on transport rather than secretion.
Question 4 of 5
Intestinal crypts of Lieberkühn are located:
Correct Answer: A
Rationale: Crypts of Lieberkühn are mucosal glands in the small intestine.
Question 5 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.