NERVE CONDUCTION

NERVE CONDUCTION
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  • a stimulus causes sodium channels to open, causing sodium ions to ruse into the cell
  • From brain
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  • the influx of sodium ions changes the polarity of the solution
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  • depolarization of part of membrane causes sodium channels in adjacent parts of the membrane to open, depolarizing that part of the membrane as well
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  • the action potential spreads along the membrane
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  • sodium channels close and potassium channels open
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  • + + + + + + + + + + + + + +  POSITIVE + + + + + + + + + + + + + + +
  • - - - - - - - -- - - - - - - - NEGATIVE - - - - - - - - - - - - - - - - 
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  • potassium ions diffuse out of the cell, repolarizing and restoring the electrical potential of the membrane (negative on inside, positive on outside)
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  • To a part of the body
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