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. So once acetylcholine is released into this synaptic cleft, these acetylcholines are shown by these black dots. They basically bind to the membrane proteins on our sarcolema and that will depolarize our sarcoma. Now, once the sarcolema depolarizes, that action potential that is created on the sarcolema will travel into the cell via these deep imaginations known as our T tubule.