Indicate the order in which the following avents occur as an action potential is generated and propagates down the axon:

_Graded potentials are summated and membrane potential at axon
hillock (initial segment) reaches threshold.
_Nat gates close AND voltage-gated K channels open.
Efflux of K+ ions repolarizes, theh hyperpolarizes the axolemma.
_Na - K+ pumps & leakage channels re-establish resting membrane
potential.
_Reaching threshold activates/opens voltage- gated Nat channels
on the conductive segment of the neuron.
_Influx of Nations into the axon depolarizes the axolemma.