An EPSP will be produced when a ligand
A) opens a sodium channel.
B) closes a sodium channel.
C) opens a potassium channel.
D) closes a calcium channel.
E) closes a chloride channel.

Question

Quizplus · Accepted Answer

EPSPs are depolarizations of the postsynaptic membrane potential, and they are usually produced by the opening of ligand-gated ion channels that allow the entry of positively charged ions, such as sodium or calcium. Opening a sodium channel will allow the influx of sodium ions, which produces depolarization and an EPSP.

An EPSP Will Be Produced When a Ligand