During coactivation
A) all of the muscle fibers in a skeletal muscle are activated simultaneously.
B) the gamma motor-neuron and alpha motor-neuron systems to a skeletal muscle are activated simultaneously.
C) all of the cross bridges within a single skeletal muscle are activated simultaneously.
D) the primary (annulospiral) and secondary (flower-spray) endings within a muscle spindle are activated simultaneously.
E) none of these answers.
Correct Answer:
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