What determines the direction of membrane voltage change on the postsynaptic membrane?
A)the type of neurotransmitter
B)whether the receptor uses a second messenger system or not
C)the main ion traveling through the opened channel
D)the number of channels on the postsynaptic membrane

Question

Quizplus · Accepted Answer

The direction of membrane voltage change on the postsynaptic membrane is determined by the main ion traveling through the opened channel. Different neurotransmitters can activate receptors that allow different ions to pass through, which can either depolarize or hyperpolarize the membrane potential. The number of channels on the postsynaptic membrane can affect the magnitude of the change, but not the direction. Whether the receptor uses a second messenger system or not can also affect the magnitude, but not the direction, of the membrane voltage change.

What Determines the Direction of Membrane Voltage Change on the Postsynaptic