put in order the seq of events for a action potential to happen at the NMJ
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| an AP at the axon terminal opens voltage-gated calcium channels in the terminal button, calcium ions diffuse into the terminal button from the ECF | 1
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| acetylocholine is released by exocytosis from the vesicles in the terminal button | 2
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| ACh diffuses through the space b/w the nerve cell and muscle cell | 3
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| ACh binds to receptor sites on the motor end plate of the muscle cell | 4
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| this binding opens channels for sodium influx into the ICF of the muscle cell | 5
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| a local current flow that opens adjacent sodium channels in the motor end plate | 6
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| an action potential is initiated through the muscle fiber | 7
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| AChe acetylocholinesterase terminates the activity of ACh and NMJ | 8
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