Which of these would increase the tension generated in a skeletal muscle?
A. Stretching the muscle to very long lengths
B. Switching off fast-glycolytic motor units and activating an equal number of slow-oxidative motor units
C. Increasing the frequency of firing in alpha motor neurons innervating the muscle
D. Resting the muscle for several weeks
E. Increasing the amplitude of action potentials in the alpha motor neurons that innervate the muscle
Answer: C
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