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Hind brain - Medulla - Cerebellum Midbrain - Mesencephalon forebrain - Thalamus and hypothalamus - Cerebral cortex Oligodendrocytes form myelin sheaths that protect one or more axons Astrocytes are heavily branched cells attached to neurons that act as supply lines to absorb and secrete things Microglial cells monitor health of neurons can perform phagocytosis Ependymal cells, typically ciliated, line the central cavities of the brain and spinal cord, forming a barrier between cerebrospinal fluid and surrounding CNS cells Blood vessel walls within the brain are not permeable. Molecules like oxygen and glucose can. Endothelial cells in these blood vessel walls form tight junctions which is what restricts the permeability.
