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Question
question
all of the following statements are true of the subconscious motor pathways, except:
answer
the subconscious motor pathways can modify or direct skeletal muscle contractions by stimulating, facilitating, or inhibiting lower - motor neurons.
control of muscle tone and gross movements of the neck, trunk, and proximal limb muscles is transmitted mainly by vestibulospinal, tectospinal, and reticulospinal tracts.
the tectospinal tracts help control the distal limb muscles that perform precise movements.
centers in the cerebrum, diencephalon, and brain stem may issue somatic motor commands as a result of processing performed at a subconscious level.
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The tectospinal tracts are mainly involved in reflexive head and neck movements in response to visual and auditory stimuli. They do not control the distal limb muscles for precise movements. That function is more associated with the corticospinal tracts (especially the lateral corticospinal tract).
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The tectospinal tracts help control the distal limb muscles that perform precise movements.