The document discusses the organization of the motor system, including:
1. The primary motor cortex and supplementary motor areas in the frontal lobe that control voluntary movement.
2. The pyramidal tract that transmits signals from the motor cortex to the spinal cord and brainstem.
3. The extrapyramidal system including basal ganglia and brainstem that regulates posture and balance.
4. How motor neurons in the spinal cord and brainstem connect to muscles to control movement.
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