| Front | synoptic transmission |
|---|---|
| Back | synoptic transmission - AP reaches end of presynopyic membrane which is depolarised, which causes Ca2+ channels to open and Ca2+ to diffuse into synoptic knob and vesicles to fuse with presynoptic membrane and release contents (NT) via exocytisis into synoptic cleft - NT diffuses towards postsynoptic neurone where it binds to NT receptor, which causes Na+ channels to open and Na+ enter postsynoptic neurone and causes AP which is propogated along neurone |
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