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radial nerve

n :  a large nerve that arises from the posterior cord of the brachial plexus and passes spirally down the humerus to the front of the lateral epicondyle where it divides into a superficial branch distributed to the skin of the back of the hand and arm and a deep branch to the underlying extensor muscles - called also musculospiral nerve , nervus radialis  .
 
 

 
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Rangely District Hospital (Rangely, Colorado - Rio Blanco County)