Short Answer Sequencing Indicate the proper sequence o appropriate number from 2

Question

Short Answer Sequencing Indicate the proper sequence o appropriate number from 2 through 7. Numbers 1 and 8 are already identified. at the neuromuscular junction by filling in the blank with the ACh is released from the axon terminal by exocytosis. An EPSP takes place, primarily as a result of Nat influx. Acetylcholinesterase inactivates ACh, terminating activity at the neuromuscular junction -An action potential is propagated to an axon terminal of a motor neuron. Channels that permit passage of Na and K are opened in the motor end plate Ca channels are opened in the axon terminal. Local current flow between the motor end plate and adjacent muscle-cell membrane initiates an action potential that spreads throughout the muscle fiber. ACh binds with receptor sites on the motor end plate.

Explanation / Answer

1. An action potential is propagated to an axon terminal of a motor neuron.

2. Calcium ion channels are opened in the axon terminal.

3. Acetylcholine is released from the axon terminal by exocytosis.

4. Acetylcholine binds with receptor sites on the motor end plate.

5. An EPSP takes place, primarily as a result of sodium ion influx.

6. Channels that permit passage of Na+ and K+ are opened in the motor end plate.

7. Local current flow between the motor end plate and adjacent muscle cell membrane initiates an action potential that spreads throughout the muscle fibres.

8. Acetylcholinesterase inactivates Acetylcholine, terminating activity at neuromuscular junction.

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