Glial cells, also known as glia, are a type of cells in the nervous system that support and protect neurons. They do not participate directly in synaptic interactions and electrical signaling, but their supportive functions help define synaptic contacts and maintain the signaling abilities of neurons
. The main functions of glial cells include supporting and nourishing nerve cells, facilitating communication between neurons, regulating inflammation, forming the blood-brain barrier, and maintaining the ionic milieu of nerve cells
. There are several types of glial cells, including astrocytes, oligodendrocytes, and microglial cells, each with specific roles in supporting the central and peripheral nervous systems
