ATI LPN
Gastrointestinal System Questions and Answers Questions
Question 1 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 2 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 3 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.
Question 4 of 5
Lamina propria differs from dermis by having:
Correct Answer: C
Rationale: Lamina propria has more lymphocytes for mucosal immunity, while dermis has denser collagen and more adipocytes.
Question 5 of 5
For an organ lying within a body cavity, the tissue which forms the deepest layer (i.e., farthest from the inner core or lumen of the organ) is called the:
Correct Answer: B
Rationale: The serosa, a mesothelial layer, covers organs within body cavities like the peritoneal cavity.