When released into the synapse between motor neurons and muscle cells, dopamine tends to create excitatory messages that lead to muscle contraction.

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Quizplus · Accepted Answer

Dopamine is a neurotransmitter primarily involved in the brain's reward system and motor control, but it is not the primary neurotransmitter released at the neuromuscular junction to stimulate muscle contraction. Acetylcholine is the neurotransmitter that is released at the synapse between motor neurons and muscle cells to create excitatory messages leading to muscle contraction.

When Released into the Synapse Between Motor Neurons and Muscle