The "threshold" potential of a membrane is the ________.
A) lowest frequency of action potentials a neuron can produce
B) minimum hyperpolarisation needed to prevent the occurrence of action potentials
C) minimum depolarisation needed to operate the voltage-gated sodium and potassium channels
D) peak amount of depolarisation seen in an action potential

Question

Quizplus · Accepted Answer

The threshold potential of a membrane refers to the minimum depolarization needed to activate voltage-gated sodium and potassium channels and trigger an action potential. This depolarization must be sufficient to overcome the resting membrane potential and reach the threshold potential. Therefore, choice C is the correct answer. Choices A, B, and D do not accurately describe the threshold potential of a membrane.

The "Threshold" Potential of a Membrane Is the ________