If a single EPSP depolarizes the initial segment from a resting membrane potential of -70 mV to -65 mV,and threshold is at -60 mV,will an action potential be generated? Explain your answer.
A)Yes,because depolarization reached threshold.
B)No,because depolarization did not reach threshold.
C)Yes,because depolarization did not reach threshold.
D)No,because depolarization reached threshold.
E)Yes,because all stimuli to a resting membrane will cause an action potential.

Question

Quizplus · Accepted Answer

A depolarization of only 5 mV is not enough to reach threshold, which is at -60 mV. Therefore, an action potential will not be generated.

If a Single EPSP Depolarizes the Initial Segment from a Resting