A 48-year-old man with chronic epigastric pain (BP 128/82, HR 88, RR 16, Temp 37.2°C) undergoes upper endoscopy. Duodenal biopsy reveals normal villous architecture with intact crypts of Lieberkühn. Notably, Brunner's glands in the submucosa secrete alkaline mucus to neutralize gastric acid. H. pylori staining is negative. Which anatomic segment of the small intestine was sampled?
- A)DuodenumGABARITO
- B)Jejunum
- C)Esophagus
- D)Colon
- E)Ileum
Explicação
The duodenum is identified by Brunner glands in the submucosa. These glands produce alkaline secretions that help neutralize acidic chyme arriving from the stomach. Villi and crypts confirm small intestine, and the submucosal glands make the location specifica... Ver explicação completa e trilha adaptativa →