And the movement of the cilia helps move our cerebral spinal fluid around our body. So let's move on to the third type of support cell of the nervous system in a central nervous system known as oligodendrocytes. Now let's recall the structure of the neuron. So the neuron contains the dendrites which accept our signal. We have the cell body which contains the nucleus and the organelles. We have the exxon hillock which generates the electric signal and we have the exxon.