Which of the Following Manipulations Would Reduce the Release of Neurotransmitter

question 23

Multiple Choice

Which of the following manipulations would reduce the release of neurotransmitter from a presynaptic neuron terminal?

• A)reduction in extracellular calcium ion concentration at the axon terminal
• B)increase in extracellular sodium and potassium ion concentrations at the axon terminal
• C)addition of tetrodotoxin to the extracellular fluid at the axon terminal
• D)All of the above manipulations would reduce the release of neurotransmitter.

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