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

Question

Quizplus · Accepted Answer

Acetylcholine is the primary neurotransmitter responsible for muscle activation in the peripheral nervous system. It is released at the neuromuscular junction and binds to receptors on muscle cells, causing them to contract or "twitch."

Jeremy Is Sitting Quietly When the Muscles in His Left