The glial cells or glia are other cells of the smaller and that many nervous system neurons, which do not transmit nerve impulses, but serve as support to neurons, isolate them, defend them and nurture. Its role is fundamental, since neurons cannot be replaced, and glial cells keep them in the right conditions to ensure their survival .
Several types of glial cells are distinguished:
- Glial cells of the Central Nervous System: astrocytes, oligodendrocytes and microglia.
- Glial cells of the Peripheral Nervous System: Schwann cells.
|By OpenStax [CC BY 4.0], via Wikimedia Commons|