Spinal cord ependymal cells

Neuroglia include (1) ependymal cells lining the ventricles of the brain and the central canal of the spinal cord, (2) cells of the PNS (Schwann cell) and CNS (oligodendrocyte) that wrap around axons to form compacted plasma membranes (myelin) that provide electrical insulation to speed nerve conduction, (3) cells (astrocytes) that interface between nerve cells and capillaries in the CNS, regulate interstitial water content, concentration, remove and metabolize certain NT molecules, and proliferate following injury. 

Ependymal cells line the brain ventricles and the spinal cord central canal 15... 

Tang FR, Sim MK (1997) Metabotropic glutamate receptor subtype-la (mGluRla) immunoreactivity in ependymal cells of the rat caudal medulla oblongata and spinal cord. Neurosci Lett 225 177-180. 

The ependymal cells are ciliated cells that line the cavities (ventricles) of the CNS and the spinal cord. In some areas of the brain, the ependymal cells are functionally specialized to elaborate and secrete cerebrospinal fluid (CSF) into the ventricular system. The beating of the ependymal cilia allow for efficient circulation of the CSF throughout the CNS. The CSF acts as both a shock absorber protecting the CNS from mechanical trauma and a system for the removal of metabolic wastes. The CSF can be aspirated from the spinal canal and analyzed to determine whether disorders of CNS function, with their characteristic CSF changes, are present. 

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