So at the end of each projection is a bulb shaped structure that can basically release neurotransmitters. So we can release these chemicals known as neurotransmitters, that can go on and bond to receptors on the post synaptic cell as shown in the diagram. And that can basically generate an electrical signal in the post synaptic cell. Now, the post synaptic cell is basically the cell that is adjacent to our synapse, to our axon terminal that receives that signal in the first place. And the space, the region between this bulb like structure and our postsynaptic cell is known as our synaptic cleft. Now, this entire region is also sometimes known as the synapse and we're going to discuss the details of the synapse and how it actually works in a future lecture.