In gate-control theory, substance P

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     is unrelated to pain.
      opens the spinal gates for pain.
      is similar in function to endorphins.
      closes the spinal gates for pain.
asked May 15, 2013 in Psychology by anonymous
    

1 Answer

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opens the spinal gates for pain.
answered May 16, 2013 by ProAnswers ~Top Expert~ (7,505 points)

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