The force of muscle contraction depends on the

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    number of muscle fibers stimulated
    number of motor units stimulated
    frequency of action potentials in each motor unit
    frequency of action potentials in each muscle fiber
    all of the above

asked May 30, 2013 in Biology by anonymous
    

1 Answer

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all of the above
answered May 31, 2013 by Bioshare ~Top Expert~ (34,070 points)

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