Neuroglial (often called glia or glial) cells are non signalling cells which comes in various types and structure-related functions in the nervous system. The three major ones are Astrocytes, Oligodendrocytes and Microglial cells in the Central nervous system. There are also glial cells found in the Peripheral nervous system such as Schwann cells.
Glial cells are found larger in number than neurons and are able to proliferate throughout life unlike neurons which doesn't. In the past, it was thought that their role was to give support to the working neurons in the human body but as study goes on till now, glial cells are found to work along with neurons in every neuronal aspect in the body .