The nervous system controls the strength and degree of muscle contraction due to __________.

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    the number of fibers stimulated
    the frequency of action potentials
    The first two answers are both correct.

asked May 30, 2013 in Biology by anonymous
    

1 Answer

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The first two answers are both correct.
answered May 31, 2013 by Bioshare ~Top Expert~ (34,070 points)

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