For a neurotransmitter to produce an inhibitory postsynaptic potential,which of the following channels must open?
A) Sodium and potassium channels
B) Potassium and/or chloride channels
C) Sodium and chloride channels
D) Only the sodium channels

Question

Quizplus · Accepted Answer

Inhibitory postsynaptic potentials (IPSPs) are generated by the opening of ion channels that allow the influx of negative ions (usually chloride) or efflux of positive ions (usually potassium) out of the cell. This hyperpolarizes the cell, making it less likely to generate an action potential. Therefore, choice B (potassium and/or chloride channels) is the correct answer as either of these ions can produce an inhibitory effect.

For a Neurotransmitter to Produce an Inhibitory Postsynaptic Potential,which of the Following