1. A presynaptic membrane in the distal part of the axon
2. This presynaptic membrane also contains Na+
3. Vesicles in the presynaptic cell that contains the (neuro) transmitter
4. Neuro-transmitter. In the motor endplate, the neuro-transmitter is always acetylcholine
5. A postsynaptic membrane of the muscle cell. These are typically folded (guess why?
6. Receptor operated channels (=ROC) located in the postsynaptic membrane.