If acetylcholine (ACh) causes inhibition of a postsynaptic neuron, to what type of membrane channel didtheACh bind?
A) mechanically-regulated channel
B) voltage-regulated sodium channel
C) voltage-regulated calcium channel
D) chemically-regulated potassium channel
E) chemically-regulated sodium channel

Question

Quizplus · Accepted Answer

Chemically-regulated potassium channels are responsible for hyperpolarizing the postsynaptic membrane, causing inhibition of the postsynaptic neuron. ACh is known to bind to nicotinic receptors that are linked to chemically-regulated potassium channels.

If Acetylcholine (ACh) Causes Inhibition of a Postsynaptic Neuron, to What