Podcast
Questions and Answers
What causes synaptic vesicles to fuse with the axonal membrane at the neuromuscular junction?
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?
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?
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?
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 causes synaptic vesicles to release acetylcholine (ACh) into the synaptic cleft?
What allows Ca2+ to enter the axon terminal at the neuromuscular junction?
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 enzyme is responsible for the destruction of acetylcholine at the neuromuscular junction?
What initiates electrical changes in the sarcolemma 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 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?
What causes synaptic vesicles to fuse with the axonal membrane at the neuromuscular junction?
Flashcards
Synaptic vesicle fusion cause
Synaptic vesicle fusion cause
Influx of calcium ions into the axon terminal.
Stops muscle fiber contraction
Stops muscle fiber contraction
Acetylcholinesterase breaks down acetylcholine (ACh).
Starts sarcolemma changes
Starts sarcolemma changes
Binding of acetylcholine (ACh) to its receptors.
What diffuses across synaptic cleft?
What diffuses across synaptic cleft?
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Synaptic vesicles release ACh by...
Synaptic vesicles release ACh by...
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Allows Ca2+ entry
Allows Ca2+ entry
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Enzyme destroying acetylcholine?
Enzyme destroying acetylcholine?
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Synaptic vesicles fuse due to...
Synaptic vesicles fuse due to...
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