This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General physiology, Subject name: Physiology
[{'content': 'All are secreted in the stomach except? \nSelect and explain. \nA. Secretin, B. Hcl, C. Intrinsic factor, D. Mucous', 'role': 'user'}, {'content': "Answer: A \nExplanation: Gastrin produced by G cells in the pyloric gland is absorbed into the blood and carried to the oxyntic glands where it stimulates the parietal cells strongly to secrete hcl. And secretin is synthesized and secreted by S cells of duodenum (GANONG'S REVIEW OF MEDICAL PHYSIOLOGY)", 'role': 'assistant'}]