Which of the Following Statements is True About Voltage-Gated K⁺

Question

Which of the following statements is true about voltage-gated K⁺ channels?
A)They are triggered to open at voltages near the Na⁺ equilibrium potential.
B)They are triggered to open at voltages near the resting membrane potential.
C)They are triggered to open at voltages near the threshold potential.
D)They are triggered to open at voltages below the resting membrane potential.

Accepted Answer

Voltage-gated K⁺ channels are triggered to open at voltages near the threshold potential, which is the membrane potential at which an action potential is initiated. This allows K⁺ to flow out of the cell, contributing to the repolarization phase of the action potential.