Good for you, Shrooms. Always glad to know a fellow medical "aspirant."

Glial cells basically provide support and nutrition to neurons, which are the cells that think our thoughts and send the signals we use for all aspects of life. We have about 10 times more glial cells than neurons, and they're critically, vitally important. Without glial cells, no aspect of our central or autonomous nervous systems and no aspects of our bodies would work. We couldn't live without glial cells. That's why people die from gliomal tumors faster than they do from neuromas.

http://en.wikipedia.org/wiki/Glia