Electrical impulses are sent through a neuron’s axon which are translated into chemical signals at the terminal button. Here, vesicles containing neurotransmitters are released which fuse with the outer membrane of the neuron and release neurotransmitters into the synaptic cleft. Here, the neurotransmitters will bind to a specific neurotransmitter receptor and eventually trigger the release of another electrical impulse in the postsynaptic neuron (generated by the axon hillock). Neurotransmitters which haven’t binded are either destroyed by enzymes in the cleft or reuptaken by the presynaptic neuron.