Jeremy is sitting quietly when the muscles in his left leg begin to "twitch" this activation of movement in his voluntary muscles is most likely due to the release of the neurotransmitter:
Correct answer: D. acetylcholine
- A. epinephrine
- B. dopamine
- C. norepinephrine
- D. acetylcholine
Explanation
Acetylcholine activates skeletal muscles at the neuromuscular junction, producing voluntary movement and muscle contraction. Epinephrine and norepinephrine are mainly associated with arousal, while dopamine has important roles in movement and reward within the brain.
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