The “final common pathway” for control of muscle is the
A) Alpha motor neuron
B) Upper motor neurons in the cortex
C) Lateral corticospinal tract
D) Pyramidal tract
E) Rubrospinal tract

Question

Quizplus · Accepted Answer

The "final common pathway" for control of muscle is the alpha motor neuron. It is the last neuron in the motor pathway that directly innervates skeletal muscle fibers, causing them to contract. Upper motor neurons, corticospinal tracts, and other tracts like the rubrospinal tract are involved in the pathway that leads to the activation of alpha motor neurons, but they are not the final pathway themselves.

The “Final Common Pathway” for Control of Muscle Is the