Which statement about the effects of opiates on synaptic transmission is false?
A) They act on receptors that are coupled to G proteins that open potassium channels, close calcium channels, and inhibit adenylyl cyclase.
B) They affect presynaptic autoreceptors and reduce the amount of transmitter released.
C) They cause postsynaptic depolarization by opening potassium channels.
D) They cause less transmitter to be released via axoaxonic inhibition.

Question

Quizplus · Accepted Answer

Opiates do not cause postsynaptic depolarization by opening potassium channels. Instead, they inhibit the release of neurotransmitter and can also hyperpolarize the postsynaptic neuron.

Which Statement About the Effects of Opiates on Synaptic Transmission