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