1. The action potential is:
“all-or-none”
for a given neuron an action potential
will always have the same magnitude
conducted without decrement
subthreshold stimuli decay with
distance
action potentials are self-generating -
they’re the same magnitude at one
end of the axon as at the other

3. Conduction velocity
In invertebrate neurons - C.V. a D0.5
Diameter (µm) C.V. (m • s-1)
Crab leg axon
Squid giant axon
Cat

5. Saltatory Conduction

6. Nucleus
Schwann
cell
Axon
Nucleus
Myelin sheath