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: Anatomy
[{'content': 'Infundibulum develops from ? \nSelect and explain. \nA. Floor of lateral ventricle, B. Floor of 4th ventricle, C. Floor of third ventricle, D. Rhombencephalon', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Floor of third ventricle(Ref: Textbook of Neuroanatomy p. 112)The infundibulum of the diencephalon is a downward evagination of the floor of the third ventricle.As the infundibulum grows down, it meets an ectodermal diveiculum of the oral cavity, known as Rathke's pouch.", 'role': 'assistant'}]