Neurons and support cells

http://www.siumed.edu/~dking2/ssb/neuron.htm

Although glial cells vastly outnumber nerve cells (approx. 10:1 glia to neurons), nerve cells are so large, including the total volume of all their dendrites and axons, that most of the cellular volume of the brain consists of nerve cells.

http://www2.jogjabelajar.org/modul/how/b/brain/brain.htm