ATI LPN
Gastrointestinal System Questions and Answers Questions
Question 1 of 5
A patient with PUD reports severe pain 30 minutes after eating. The pain is not relieved by antacids. What should the nurse suspect?
Correct Answer: A
Rationale: Pain shortly after eating, unrelieved by antacids, is typical of a gastric ulcer due to acid irritation.
Question 2 of 5
A patient with PUD presents with signs of dehydration, including dry mucous membranes and hypotension. The nurse should anticipate which intervention?
Correct Answer: A
Rationale: IV fluids are needed to correct dehydration and stabilize blood pressure.
Question 3 of 5
What is the most definitive diagnostic test for peptic ulcer disease?
Correct Answer: B
Rationale: Endoscopy with biopsy is the most definitive test for PUD, allowing visualization of ulcers and testing for H. pylori, a common cause. Barium swallow can detect ulcers but is less specific. CT scan is used for complications like perforation, not primary diagnosis. Fecal occult blood detects bleeding but not the ulcer itself.
Question 4 of 5
In humans, structures that release digestive secretions directly into the small intestine include both the
Correct Answer: D
Rationale: The pancreas releases digestive enzymes and the gall bladder releases bile directly into the small intestine via ducts to aid digestion. Salivary glands (A, C) secrete into the mouth, not the small intestine. Lacteals absorb fats, not secrete. Villi are absorptive structures, not secretory.
Question 5 of 5
The enzyme pepsin is produced in the cells of the stomach but not in the cells of the small intestine. The small intestine produces a different enzyme, trypsin. The reason that the stomach and small intestine produce different enzymes is that the gene that codes for pepsin is
Correct Answer: B
Rationale: All cells have the same genes, but pepsin's gene is expressed (active) in stomach cells, not small intestine cells, due to tissue-specific regulation. It's not absent , mutated , or digested .