The electrical signal, in the form of the action potential, is transferred from this synaptic terminal onto the muscle cell, and that ultimately leads to the contraction of our muscle. Now, what exactly happens next? So our muscle contracts, and let's suppose we want to stop the contraction of the muscle. Now, as long as our acetylcholine molecule is found inside our synaptic cleft, it will continue to bind onto the binding side of these channels. And as long as our acetylcholine binds to these channels, that will continue to create or generate the action potential, which will continue to cause the muscle to contract. So how exactly do we stop the contraction of the muscle?