Question

1. when a person runs, he regulates how fast his legs move. which part of the nervous system controls this movement?

somatic
sympathetic
parasympathetic

Explanation:

The somatic nervous system controls voluntary movements like leg - movement during running. The sympathetic and parasympathetic systems are part of the autonomic nervous system, which controls involuntary functions (e.g., heart rate, digestion). Since running leg - movement is voluntary, the somatic nervous system is responsible.

Answer:

somatic