Sequencing
Indicate the Proper Sequence of Events at the Neuromuscular

question 24

Short Answer

Sequencing
Indicate the proper sequence of events at the neuromuscular junction by filling in the blank with the appropriate number from 2 through 7. Numbers 1 and 8 are already identified.
$\begin{array}{|l|l|}\hline &\text {AChis released from the axon terminal by exocytosis. } \\\hline &\text {AnEPP takes place, primarily as a result of \( \mathrm{Na} \) influx. } \\\hline 8 &\text {A cetylcholinesterase inactivates \( \mathrm{ACh} \), terminating activity at the neuromuscular junction } \\\hline 1&\text {An action potential is propagated to an axon terminal of a motor neuron } \\\hline &\text {Channels that permit passage of \( \mathrm{Na}^{+} \)and \( \mathrm{K} \) are opened in the motor end plate. } \\\hline &\text {\( \mathrm{Ca}^{2+} \) channels are opened in the axon terminal. } \\\hline &\text {Local current flow between the motor end plate and adjac ent mus de-cell membrane initiates an action potential that spreads } \\&\text { throughout the muscle fiber. }\\\hline &\text {ACh binds with receptor sites on the motor end plate. } \\\hline \end{array}$

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