When an Action Potential Arrives at the Axon Terminal, the Voltage-Gated

question 24

Multiple Choice

When an action potential arrives at the axon terminal, the voltage-gated calcium channels at the terminal

• A) release calcium into the synaptic cleft.
• B) actively transport neurotransmitter into the synaptic cleft.
• C) open; the influx of calcium causes the vesicles to fuse with the presynaptic membrane and release a neurotransmitter into the synaptic cleft.
• D) depolarize the membrane at the axon terminal.
• E) cause the membrane receptors to bind the neurotransmitter.

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