Now, the final important aspect of a neuron that I want to mention is the energy source that it actually uses. So neurons depend almost entirely on glucose for energy generation. However, the neuron cannot actually store much of the glucose in the form of glycogen inside the cell and the neuron cannot actually store much oxygen inside the cell either. So that basically implies that the neuron depends on glucose and oxygen that is found in the blood for a steady supply. Now, glucose is brought into the neuron via special type of protein molecules found in the membrane of our cell body known as our facilitative transporter proteins. And unlike most other proteins that transport glucose found in other cells of the body, the proteins in the membrane of the nerve cells do not usually depend on insulin to transport our glucose inside our cell.