What part of the brain does the nurse recognize the patient is using when making precise, intentional movements?
A) Pyramidal tract
B) Substantia nigra
C) Broca's area
D) Extrapyramidal tract
A
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Upper-level controls of muscle activity include the pyramidal tract in the cerebellum, which regulates precise intentional muscle movement, and the extrapyramidal tract in the cerebellum and basal ganglia, which coordinates crude movements related to unconscious muscle activity. Broca's area has to do with speech, not movement. The substantia nigra does not control muscle movement.
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