A stimulus that opens gated potassium ion channels, moving the membrane voltage value below the resting potential value, results in which of the following?
A) repolarization
B) hyperpolarization
C) depolarization
D) refraction
E) summation

Question

Quizplus · Accepted Answer

Opening gated potassium ion channels will result in an outflow of positively charged potassium ions, causing hyperpolarization which moves the membrane voltage value further away from the resting potential value. This is the opposite of depolarization, which moves the membrane voltage value closer to the threshold for an action potential. Repolarization is the return to the resting potential value after depolarization, and refraction and summation refer to the propagation and integration of action potentials, respectively.

A Stimulus That Opens Gated Potassium Ion Channels, Moving the Membrane