Paul is performing a voluntary muscle contraction with his b

Paul is performing a voluntary muscle contraction with his biceps. All of the motor units in his biceps have been recruited. Is it possible for him to increase the force output of his biceps? Choose ALL that apply.

a) No.
b) Yes, by increasing the discharge rate of the recruited motor neurons.

c) Yes, by increasing the number of motor units in the muscle.
d) Yes, by recruiting more muscle fibers within the recruited motor units.

Solution

A voluntary muscle contraction with his biceps. All of the motor units in his biceps have been recruited. Is it possible for him to increase the force output of his biceps

d) Yes, by recruiting more muscle fibers within the recruited motor units.