Action potentials  ______________
|  | 
   |  | occur in response to the opening of sodium channels and the flow of sodium into the neuron; | 
   |  | last for approximately 2 milliseconds; | 
   |  | are local in nature; | 
   |  | result from depolarization or a reversal of the resting membrane potential followed by a resolving repolarization of the membrane; | 
   |  | all of the alternatives provided are correct; | 
   INCORRECT - Although this statement is correct, a more complete alternative is provided.
   
    
    
   
   
   [Review Part 1 of the tutorial]
   [Review Part 2 (Matching) of the tutorial]