ocr: Resident and Staff Pnysicion Patient Education Chort Ulcers of the Digestive System Normal stomach lining Acute peptic DTLL Surface or: stress epithelial ulcer cells Mucosal erosion results from Parietal irritants such cells as - ASA, * Produce NSAID, and Isthmus hydrochloric alcohol acid Neck Pit Mucous neck Base cells Chief cells Duodenal ulcer Close-up of cells in * Produce the stomach lining enzymes Reprintedwith petmisioniromhesident ands Staff Physician (c)15 1991-92, 1993byRomaine PlersonPublishets, Ino.