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Neuromuscular Junction Quiz

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Questions and Answers

What causes synaptic vesicles to fuse with the axonal membrane at the neuromuscular junction?

Entry of Ca2+ into the axon terminal (correct)

Binding of ACh to its receptors

Release of acetylcholine (ACh)

Initiation of electrical changes in the sarcolemma

What prevents continued muscle fiber contraction at the neuromuscular junction?

Binding of ACh to its receptors

Release of acetylcholine (ACh) into the synaptic cleft

Initiation of electrical changes in the sarcolemma

Destruction of acetylcholine by acetylcholinesterase (correct)

What initiates electrical changes in the sarcolemma at the neuromuscular junction?

Binding of ACh to its receptors (correct)

Voltage-regulated calcium channels opening

Entry of Ca2+ into the axon terminal

Release of acetylcholine (ACh)

What diffuses across the synaptic cleft to ACh receptors on the junction folds of the sarcolemma?

Acetylcholine (ACh) Signup and view all the answers

What causes synaptic vesicles to release acetylcholine (ACh) into the synaptic cleft?

Fusion with the axonal membrane Signup and view all the answers

What allows Ca2+ to enter the axon terminal at the neuromuscular junction?

Voltage-regulated calcium channels Signup and view all the answers

What enzyme is responsible for the destruction of acetylcholine at the neuromuscular junction?

Acetylcholinesterase Signup and view all the answers

What initiates electrical changes in the sarcolemma at the neuromuscular junction?

Binding of acetylcholine to its receptors Signup and view all the answers

What diffuses across the synaptic cleft to ACh receptors on the junction folds of the sarcolemma at the neuromuscular junction?

Acetylcholine Signup and view all the answers

What causes synaptic vesicles to fuse with the axonal membrane at the neuromuscular junction?

Ca2+ inside the axon terminal Signup and view all the answers

Neuromuscular Junction Quiz

Choose a study mode

Podcast

Questions and Answers

What causes synaptic vesicles to fuse with the axonal membrane at the neuromuscular junction?

What prevents continued muscle fiber contraction at the neuromuscular junction?

What initiates electrical changes in the sarcolemma at the neuromuscular junction?

What diffuses across the synaptic cleft to ACh receptors on the junction folds of the sarcolemma?

What causes synaptic vesicles to release acetylcholine (ACh) into the synaptic cleft?

What allows Ca2+ to enter the axon terminal at the neuromuscular junction?

What enzyme is responsible for the destruction of acetylcholine at the neuromuscular junction?

What initiates electrical changes in the sarcolemma at the neuromuscular junction?

What diffuses across the synaptic cleft to ACh receptors on the junction folds of the sarcolemma at the neuromuscular junction?

What causes synaptic vesicles to fuse with the axonal membrane at the neuromuscular junction?

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