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The sensory circumventricular organs of the mammalian brain. 2003

M J McKinley, and R M McAllen, and P Davern, and M E Giles, and J Penschow, and N Sunn, and A Uschakov, and B J Oldfield
Howard Florey Institute of Experimental Physiology and Medicine, University of Melbourne, Victoria, 3010, Australia. mmck@hfi.unimelb.edu.au

The brain's three sensory circumventricular organs, the subfornical organ, organum vasculosum of the lamina terminalis and the area postrema lack a blood brain barrier and are the only regions in the brain in which neurons are exposed to the chemical environment of the systemic circulation. Therefore they are ideally placed to monitor the changes in osmotic, ionic and hormonal composition of the blood. This book describes their. General structure and relationship to the cerebral ventricles Regional subdivisions Vasculature and barrier properties Neurons, glia and ependymal cells Receptors, neurotransmitters, neuropeptides and enzymes Neuroanatomical connections Functions.

UI MeSH Term Description Entries
D008322 Mammals Warm-blooded vertebrate animals belonging to the class Mammalia, including all that possess hair and suckle their young. Mammalia,Mammal
D002552 Cerebral Ventricles Four CSF-filled (see CEREBROSPINAL FLUID) cavities within the cerebral hemispheres (LATERAL VENTRICLES), in the midline (THIRD VENTRICLE) and within the PONS and MEDULLA OBLONGATA (FOURTH VENTRICLE). Foramen of Monro,Cerebral Ventricular System,Cerebral Ventricle,Cerebral Ventricular Systems,Monro Foramen,System, Cerebral Ventricular,Systems, Cerebral Ventricular,Ventricle, Cerebral,Ventricles, Cerebral,Ventricular System, Cerebral,Ventricular Systems, Cerebral
D004805 Ependyma A thin membrane that lines the CEREBRAL VENTRICLES and the central canal of the SPINAL CORD. Ependymas
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D013356 Subfornical Organ A structure, situated close to the intraventricular foramen, which induces DRINKING BEHAVIOR after stimulation with ANGIOTENSIN II. Organum Subfornicale,Organ, Subfornical,Organs, Subfornical,Organum Subfornicales,Subfornical Organs,Subfornicale, Organum,Subfornicales, Organum
D031608 Area Postrema A small, rounded eminence on each side of the FOURTH VENTRICLE, which receives nerve fibers from the SOLITARY NUCLEUS; SPINAL CORD; and adjacent areas of the MEDULLA OBLONGATA. The area postrema lies outside the BLOOD-BRAIN BARRIER and its functions include acting as an emetic chemoreceptor. Chemoreceptor Trigger Zone,Area Postremas,Chemoreceptor Trigger Zones,Postrema, Area,Trigger Zone, Chemoreceptor,Trigger Zones, Chemoreceptor,Zone, Chemoreceptor Trigger,Zones, Chemoreceptor Trigger

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