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Natalija [7]
2 years ago
13

Place the following events that occur at the vertebrate neuromuscular junction in the correct order. I Depolarization of the mus

cle fiber membrane. II Generation of an action potential in the neuron. III Stimulation of Ca2+ entry into the neuron. IV Release of acetylcholine into the synapse
Biology
1 answer:
meriva2 years ago
3 0

Answer:

Generation of an action potential in the neuron.

Stimulation of Ca2+ entry into the neuron

Release of acetylcholine into the synapse

Depolarization of the muscle fiber membrane

Explanation:

The following events takes place in the vertebrate neuromuscular junction

a) Nerve Action Potential - Action potential reaches the axon terminal

b) Entry of calcium ion - The calcium ion reaches the axon terminal and enter into the presynaptic terminus after which the Synaptic vesicles fuse with the membrane of axon terminal

c) Releasing of Arch Quanta - Acetylcholine is released into synaptic cleft which then  binds to the receptor sites on motor end plate

d) The  Na+/K+ channels opens and Motor end plate becomes depolarized.

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