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The action potential arrives at the axon terminal


Calcium channels open allowing calcium ions to enter the axon terminal


Acetylcholine is released into the synaptic cleft and calcium ions are pumped out of the axon terminal


Acetylcholine binds to receptor sites on the motor end plate


An action potential is generated which propagates and travels down t-tubulues


The action potential causes the release of calcium ions


Calcium ions trigger a contraction of the muscle cell

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