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The stomach is divided into 3 portions: the fundus, corpus, and antrum. The fundus stores food and prevents increases in intra-abdominal pressure. The antrum controls stomach emptying through the pylorus. The pacemaker region is located in the corpus. The vagus nerve stimulates acid secretion and motor activity. Parietal cells in the fundus secrete hydrochloric acid. Peptic ulcers occur when defense mechanisms cannot deal with acid in the lumen, causing auto-digestion of the mucosa. Gastric ulcers typically

Author

seniorhype

Language

EN