- Created by: emily.folkard
- Created on: 15-11-18 12:08
1. An action potential arrives at the synaptic knob of the pre synaptic neuron.
2. The action potential causes the voltage sensitive calcium ion channel to open, calcium ions diffuse in.
3. Vesicles containing acetyl choline (by excitatory coupling) fuse at the pre synaptic membrane and rupture (exocytosis).