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A synapse between a motor neuron and a muscle cell uses the neurotransmitter acetylcholine. Where is the acetylcholine produced and to where does it travel?

Synaptic vesicles of the motor end plate; receptors on the axon
Synaptic vesicles of the axon; receptors on the motor end plate.
Receptors of the motor end plate; synaptic vesicles on the axon
Receptors of the axon; synaptic vesicles on the motor end plate