Voluntary fine-motor movements are produced by activation of the _____ tract(s).
A) dorsal horn-lemniscal
B) lateral corticospinal
C) spinothalamic
D) medial brainstem

Question

Quizplus · Accepted Answer

Corticospinal neurons from the primary motor cortex activate a motor neurons to execute voluntary fine-motor commands.The dorsal column-medial lemniscal tract carries fine touch,vibration sense,and proprioception and remains ipsilateral until the level of the medulla.The anterolateral tract (previously called the spinothalamic tract)carries impulses for sensations of pain,itch,and temperature.Activation of the medial brainstem tracts is not associated with voluntary fine-motor movements.

Voluntary Fine-Motor Movements Are Produced by Activation of the _____