ATI LPN
Questions About Gastrointestinal System Questions
Question 1 of 5
All of the following are primarily mucous-secreting glands EXCEPT:
Correct Answer: C
Rationale: Fundic glands secrete acid and pepsinogen, not primarily mucus.
Question 2 of 5
Which of the following cells is most directly responsible for protecting the stomach mucosa from attack by acid and proteolytic enzymes?
Correct Answer: D
Rationale: Surface mucous cells secrete a protective mucus layer.
Question 3 of 5
Undifferentiated, mitotically active epithelial cells which can replace or regenerate the epithelial lining of the small intestine are located:
Correct Answer: D
Rationale: Stem cells in crypt walls replenish the epithelium.
Question 4 of 5
Plasma cells differ from other lymphocytes by having:
Correct Answer: D
Rationale: All features distinguish antibody-producing plasma cells.
Question 5 of 5
The vessel which brings oxygenated, arterial blood from the heart into the liver, with branches in each portal area, is the:
Correct Answer: A
Rationale: The hepatic artery supplies oxygen-rich blood.