A synapse does not involve the glial covering. The presynaptic membrane is the part of the cell that fires off neurotransmitters while the postsynaptic membrane is the part of a neighboring cell that receives the neurotransmitters. The synaptic cleft is the space in between the two cells where the neurotransmitters are transferred between them. Finally, the terminal button is located at the end of a cell's axon and stores all of the neurotransmitters before they are fired off. Glial covering is the fatty substance that lines the outside of axons and allows electrical impulses to move more easily across the cell.