When a neurotransmitter like GABA is acting in an inhibitory manner which of the following is likely a result of the GABA acting on the post synaptic cell?
A) influx of positively charged ions into the postsynaptic cell
B) opening of chemically gated sodium channels
C) depolarization of the postsynaptic cell membrane
D) hyperpolarization of the postsynaptic cell membrane

Question

Quizplus · Accepted Answer

When GABA acts on the postsynaptic cell in an inhibitory manner, it typically opens chloride ion channels, allowing negatively charged chloride ions to move into the cell. This makes the inside of the cell more negative, or hyperpolarized, making it less likely for the cell to fire an action potential.

When a Neurotransmitter Like GABA Is Acting in an Inhibitory