Nerve Signals and Animal electricity

[lauren_study]

Could anyone explain to me nerve signals in particular action potential and the Myelin Steath?
Also animal electricty with Luigi Galvani?
Thankyou if you can :)
ps Sorry if this in wrong topic, new user:)

 

[lalbatros]

http://en.wikipedia.org/wiki/Action_potentials
http://en.wikipedia.org/wiki/Axon