A patient with PUD is undergoing an upper GI endoscopy. The nurse is aware that this procedure is primarily used to:

Correct Answer: B

Rationale: Upper GI endoscopy directly visualizes ulcers and abnormalities in the stomach and duodenum.

Correct Answer: C

Rationale: Gastritis is characterized by inflammation of the stomach lining, commonly due to factors like H. pylori infection, excessive alcohol consumption, or chronic NSAID use, which disrupt the mucosal barrier and lead to inflammation. Overproduction of bile acids is more related to bile reflux, not a primary cause of gastritis. Erosion due to gastric acid is more indicative of peptic ulcer disease progression rather than gastritis alone. Ulcer formation in the duodenum pertains to duodenal ulcers, not gastritis.

Correct Answer: D

Rationale: Any link between cirrhosis and Crohn's disease is dubious, though there may be an increase because of transfusion-related viral hepatitis or end-stage primary screening. It is important to look for other actiologies such as alcohol if cirrhosis does occur in these patients.

Correct Answer: B

Rationale: Glucose moves from the digestive tract to muscle cells via absorption (uptake into blood) and circulation (transport via bloodstream). Ingestion and digestion prepare glucose but don't move it. Anaerobic respiration uses glucose, not transports it. Protein synthesis is unrelated.

Correct Answer: B

Rationale: The digestive system provides glucose (from food), and the respiratory system provides oxygen, both needed for ATP production via cellular respiration. Other systems (A, C, D) don't supply these directly.