> > How does an impulse travel down an axon in action potential
> At the end of the journey, at the synaptic terminal, the voltage
> sodium channels are joined by voltage sensative calcium channels, and
> is the influx of calcium that is responsible for causing the
> neurotransmitters, packages in little membrane vesicles, to be released
> onto the next cell. That next cell may be another neuron, and the
> thing could start again at the next cell, and so on ...
>> Hope that helped.
Excellent, would you extend your explanation to include saltatory