Well, basically they arrive to the cell via the neurons, the axons of our neurons. So this is one particular neuron. We have the axon that basically deviates and eventually binds onto the membrane of the cell. And this is known as the neuromuscular junction, the motor and the motor neuron ends. So basically, at the neuromuscular junction, we have the synapse between our axon terminal of the neuron and our cell membrane of this muscle cell. And the neurotransmitter that is used to pass down that actual potential onto our cell membrane is known as our acetylcholine.