A patient with PUD who is taking NSAIDs reports worsening symptoms. The nurse should suggest which of the following to the physician?

Correct Answer: A

Rationale: NSAIDs worsen PUD; switching to acetaminophen reduces mucosal irritation.

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.

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.

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 .

Correct Answer: C

Rationale: Partly-digested food (chyme) moves from the stomach to the small intestine for further digestion and absorption, making C correct. The gullet is before the stomach, the appendix is a side structure, and the large intestine follows the small intestine.