Final answer:
The firing rate of a nerve in impulses per second is determined by the frequency of motor neuron signaling. Wave summation can result in a stronger contraction. Increasing the frequency of action potentials can increase the force produced.
Step-by-step explanation:
The maximum firing rate of a nerve in impulses per second is determined by the rate at which a motor neuron fires action potentials. Wave summation occurs when the fibers are stimulated while a previous twitch is still occurring. This results in a stronger contraction of the motor unit.
The frequency of motor neuron signaling affects the tension produced in skeletal muscle and can increase the force produced.