This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Brain , Subject name: Anatomy
[{'content': 'All of the following are devoid of blood brain barrier except \nSelect and explain. \nA. Organum Vasculosum, B. Median Eminence, C. Adenohypophysis, D. Pineal gland', 'role': 'user'}, {'content': "Answer: C \nExplanation: Adenohypophysis is not devoid of blood-brain barrier (BBB) Neurohypophysis is devoid of blood-brain barrier The following are the circumventricular organs (CVO) or areas devoid of the blood-brain barrier Pineal body Neurohypophysis Organum Vasculosum of lamina terminalis (OVLT) Median Eminence(Hypothalamus) Subcommissural organ Subfornical organ Area postrema Ref: Gray's Anatomy 41st edition Pgno: 275", 'role': 'assistant'}]