The small size of the neuroglia cells makes it easy to understand how movement may take place in them sufficient to bring about separation of neurons.
"Psychotherapy"
James J. Walsh
3. Structural elements of the nervous system: The neurone-Neurone fibers-neuroglia-Complexity of the brain-"Gray" and "white" matter.
"The Mind and Its Education"
George Herbert Betts
A part of the mass of gray matter also consists of the neuroglia which surrounds the nerve cells and fibers, and a network of blood vessels.
"The Mind and Its Education"
George Herbert Betts