Definition for Glial cell
From Biology Forums Dictionary
A supportive cell in the central nervous system. Unlike neurons, glial cells do not conduct electrical impulses. The glial cells surround neurons and provide support for and insulation between them. Glial cells are the most abundant cell types in the central nervous system. Types of glial cells include oligodendrocytes, astrocytes, ependymal cells, Schwann cells, microglia, and satellite cells.
Functions:
- Provide a scaffold for neurons.
- Provide neurons with nutrients.
- Insulate neurons.
- Protect brain from toxic agents.
- Remove cellular debris when neurons die.
- Communicate with each other and with neurons.
- Help determine which neural connections get stronger or weaker.