This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
[{'content': 'Electrical pacemaker of stomach is situated in- \nSelect and explain. \nA. fundus, B. Body, C. Incisura  Gastro oesphageal junction, D. All of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Shackelford “The gastric pacemaker, which is located in the body along the greater curvature, stimulates both the filling and mixing of food in the body and antrum.”\n• Gastric pacemaker: Interstitial cells of Cajal (ICCs)\n• Location: In body\xa0along the greater curvature\n• ICCs are critical for the generation of sequential contractions', 'role': 'assistant'}]