So if this is our debris floating around our neuron, the microglia basically eats up a debris and breaks it down so that it doesn't harm our neuron in any way. So these are the four major types of neuronglia glial cells, support cells found within our central system. Let's move on to our peripheral nervous system. So basically we have satellite cells and Schwann cells. Now, the function of satellite cells is very similar to the function of astrocytes but the structure of satellite cells is somewhat different. So the satellite cells actually cover the outside surface of the neurons and they basically provide a supply of nutrients and other things into our cells, into our neurons.