The ability of a person to use his arm muscles to lift a weight is primarily regulated by
1. the somatic nervous system.
2. the sympathetic nervous system.
3. the autonomic nervous system.
4. the central nervous system.
Correct Answer: 1
Rationale: The somatic nervous system (a division of the peripheral nervous system) controls voluntary movement such as lifting a weight. The autonomic nervous system involves involuntary responses, and is divided into the sympathetic and parasympathetic divisions.
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