So this is the axon of the motor neuron that is carrying our action potential. And essentially the action potential travels along the axon until it gets to our axon terminal. So this is one axon terminal, a second axon terminal, a third axon terminal. Now, if we zoom in on this axon terminal, we basically get the following diagram. This is the axon terminal of this end region of the motor neuron, and this is the membrane that is shown in red. So basically, once the action potential arrives onto the axon terminal, the axon terminal will release synaptic vesicles that carry a special type of neurotransmitter known as acetylcholine.