The lateral corticospinal tracts include a ________ of the upper motor neuron axons that pass through the medulla, and they govern control of ________.
A) majority; axial muscles
B) majority; muscles used for finely controlled movements
C) minority; axial muscles
D) minority; muscles used for finely controlled movements

Question

Quizplus · Accepted Answer

The lateral corticospinal tracts consist of the majority of upper motor neuron axons that decussate (cross over) at the medulla and are primarily responsible for controlling muscles involved in finely controlled movements, such as those in the hands and fingers.

The Lateral Corticospinal Tracts Include a ________ of the Upper