A neuronn must reach threshold potential before an action potential begins.

Question

Quizplus · Accepted Answer

It is true that a neuron must reach threshold potential, which is typically around -55mV, in order for an action potential to be triggered. This occurs when enough excitatory signals (depolarization) are received by the neuron to overcome the inhibitory signals (hyperpolarization). Once the threshold potential is reached, voltage-gated sodium channels open and allow for the rapid influx of positively charged sodium ions, generating an action potential.

A Neuronn Must Reach Threshold Potential Before an Action Potential