29 Feb astrocyte

A type of neuroglia that forms an insulating barrier for the surface area of the brain and between parts of the brain. This barrier is important to insulate neurons from both spurious electrical potentials and other substances (such as blood and water) that could interfere with neural functions.
Keywords: neurogliaform
neuroglia
oligodendrocyte
Schwann cell
myelin
References: brain physiology
neurons
neuroscience