Which is true of neurotransmitters?
A) They increase the negative charge of the neuron, making it more likely for the neuron to become active.
B) GABA is a major excitatory neurotransmitter.
C) Only excitatory neurotransmitters can be affected by psychotropic medications.
D) Inhibitory neurotransmitters make it less likely that the neuron will become active.

Question

Quizplus · Accepted Answer

Inhibitory neurotransmitters like GABA make it less likely for the neuron to become active by decreasing the neuron's membrane potential or the difference in charge between the inside and outside of the neuron. Option A is incorrect because neurotransmitters can either increase or decrease the neuron's membrane potential depending on whether they are excitatory or inhibitory. Option B is also incorrect because GABA is a major inhibitory neurotransmitter, not excitatory. Option C is incorrect because both excitatory and inhibitory neurotransmitters can be affected by psychotropic medications.

Which Is True of Neurotransmitters