You are looking at the electrical activity at a receptor site on the postsynaptic membrane. The measured potential is -80 millivolts (below the resting potential). How is this possible?
A)No neurotransmitters were released into the synaptic cleft.
B)A neurotransmitter has hyperpolarized the postsynaptic membrane.
C)A neurotransmitter has depolarized the postsynaptic membrane.
D)Positive ions have entered ion channels near the receptor site.
E)The postsynaptic membrane is an axon.

Question

Quizplus · Accepted Answer

A neurotransmitter has hyperpolarized the postsynaptic membrane, making the inside of the cell more negative compared to the outside, which is why the potential is below the resting potential.

You Are Looking at the Electrical Activity at a Receptor