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Striking your Ulnar Nerve

tiger7
in Homework Help

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I'm doing some homework for physiology and this is one of the questions:

 

"Striking the ulnar nerve in your elbow against a hard surface (sometimes called “hitting your funny bone”) initiates action potentials in the middle of sensory and motor axons traveling in a nerve. In which direction will those action potentials propagate? Explain."

 

So I have two questions:

 

1) I said that it will travel in both directions since there is no absolute refractory period to prevent it from traveling back towards the axon hillock/soma. Is that correct?

 

2) If that is the case, what would happen when the action potential that is moving backwards reaches the soma? Does it actually cause a sensation of any sort?

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