Neuroglia - Organisation of Nervous System
We may refer neuroglia as the connective tissue of the nervous system. It involves all elements of the nervous system other than neurons. You will observe that neuroglia fills the space between the neurons and extends processes into the central region of the ganglia (neuropile).
Figure: Non-chordate neuron and a vertebrate, neuron.
It as well includes the covering of the ganglia (perineurium) with the-outer, non- cellular, fibrous neurilemma or neural lamella. These coverings, although thin, extend along the nerves too. The Schwann cells too form part of the neuroglia.