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: Physiology
[{'content': 'Food causes reflex defecation? \nSelect and explain. \nA. Enterogastric reflex, B. Defecation reflex, C. Gastrocolic reflex, D. Rectoanal reflex', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is'c'i.e., Gastrocolic reflex[Rel Guyton llth/e p. 771)Appearance of mass movements after a rneal is facilitated by gastrocolic and duodenum reflexes.These reflexes result from the distension of the stomach and duodenum.The best example of gastrocolic reflex is seen in early infancy where defecation often follows a meal.", 'role': 'assistant'}]