ATI LPN
Gastrointestinal System Questions and Answers Questions
Question 1 of 5
Feces is usually about 40 percent water and 60 percent solid matter. Reducing the water content to 20 percent would most likely result in
Correct Answer: D
Rationale: Lower water content in feces leads to constipation, making D the correct answer.
Question 2 of 5
In humans, the organ that most directly regulates the concentration of water in the blood is the
Correct Answer: D
Rationale: The kidney regulates water concentration via urine production, making D the correct answer.
Question 3 of 5
In the stomach lining, the parietal cells release _________ and the chief cells release __________ which both play a role in peptic ulcer disease.
Correct Answer: D
Rationale: Parietal cells secrete hydrochloric acid (HCl), and chief cells secrete pepsinogen, which is activated to pepsin by HCl. Both contribute to ulcer formation by eroding the mucosa, making D correct.
Question 4 of 5
Which statement is INCORRECT about Histamine-receptor blockers?
Correct Answer: A
Rationale: H2 blockers reduce HCl from parietal cells, not chief cells (A is incorrect). B and C are true, so A is the incorrect statement.
Question 5 of 5
Which of the following bacteria is a major causative factor for peptic ulcers and can be detected using a urea breath test?
Correct Answer: C
Rationale: H. pylori is a major ulcer cause and detectable by urea breath test, making C correct.