This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pancreas, spleen, ureter and kidney, Subject name: Anatomy
[{'content': 'Centroacinar cells of the Pancreas secrete : \nSelect and explain. \nA. Alkaline enzyme-poor fluid, B. Pancreatic digestive enzymes, C. Secretin, D. Cholecystokinin(CCK)', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Pancreatic Centroacinar cells Form the initial segment of the intercalated duct Pa of the exocrine pancreas. Secrete an enzyme-poor alkaline fluid when stimulated by secretin. -Pancreatic digestive enzymes are synthesized by the acinar cells of the exocrine pancreas; their release is stimulated by cholecystokinin. -Glucagon is produced in the endocrine pancreas (islets of Langerhans).', 'role': 'assistant'}]