What happens to the resting membrane potential of -70 mV when channels for a cation with an equilibrium potential of -80 mV open?
A) repolarization
B) membrane stabilization
C) returns to -70 mV
D) hyperpolarization
E) depolarization

Question

Quizplus · Accepted Answer

Opening channels for a cation with an equilibrium potential more negative than the resting membrane potential (-70 mV) will allow that cation to move into or out of the cell in a way that makes the inside of the cell more negative, leading to hyperpolarization.

What Happens to the Resting Membrane Potential of -70 MV