What is meant by an absolute refractory period? A. at least 5 ms must elapse from the time of the fi rst action potential before a second can be initiated B. an action potential cannot be initiated during this period regardless of the strength of the stimulus C. an action potential can be initiated if the strength of the stimulus is higher than normal (>70 mV) D. an action potential can be initiated if the strength of the stimulus is lower than normal (<70 mV)
Option B. Absolute refractory period meant by an action potential cannot be initiated during this period regardless of the strength of the stimulus.
