<prompt> All of the following are devoid of blood brain barrier exceptOrganum VasculosumMedian EminenceAdenohypophysisPineal gland  <response>: 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 EminenceHypothalamus Subcommissural organ Subfornical organ Area postrema Ref: Grays Anatomy 41st edition Pgno: 275 