When there is a resistance to the movement produced by a given limb muscle,
A) gamma motor neurons are inhibited by higher brain centers.
B) there is a decrease in the amount of force generated by extrafusal muscle fibers.
C) the muscle involved in the movement immediately shortens when stimulated.
D) intrafusal fibers receive fewer action potentials from the gamma motor neurons.
E) muscle tone is increased and more motor units are recruited to the contraction.

Question

Quizplus · Accepted Answer

When there is resistance to movement, the body compensates by increasing muscle tone and recruiting more motor units to overcome the resistance, thus enhancing the force generated by the muscle. This is a fundamental principle of how muscles respond to increased demands, ensuring that sufficient force is produced to move against the resistance.

When There Is a Resistance to the Movement Produced by a Given