The Synaptic Transmission

1. Voltage-gated calcium channels will open when the action potential reaches the pre-synaptic knob, & calcium ions will diffuse into the neuron down a concentration gadient.

2. The increase in calcium inside the neurone will cause the synaptic vesicles to migrate & fuse with the pre-synaptic axon cell membrane.

3. The will then release theur neurotransmitter (acetlycholine or


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