Neuroglia
Author: Dr. R. Menaka
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Neurogliocytes are the interstitial supporting tissue of nervous system. It also serves as a nutritive, protective and supportive tissue of the CNS.
The neuroglia may be grouped into 3 types
i. Fiberous astrocytes - found between the nerve fibers of the white matter of the C.N.S
ii. Protoplasmic astrocytes- forms a thick feltwork in the gray matter of brain and spinal cord.
2. Oligodendrocytes- cells are smaller than the astrocytes. It involves in the formation of myelin sheath.
3. Microglia- the microglia cells of Hortega. These cells are highly motile and phagocytic.
4. Ependyma- Single layer of columnar cells and lines the ventricles of brain and central canal of spinal cord. In certain place, they have cilia on the surface.