Zoology-Nervous System Structure
NEET Zoology Nervous System Structure MCQ Question
Type: MCQ-numerical-Hard-Class 11
If the resting potential of a neuron's membrane is -70 mV and the threshold potential required to generate an action potential is -55 mV, what is the minimum depolarization needed to initiate an action potential?
A
15 mV
B
25 mV
C
5 mV
D
50 mV
Correct Answer
Option A
Detailed Explanation
The resting potential is -70 mV and the threshold potential is -55 mV. The difference is 15 mV, which is the minimum depolarization needed to reach the threshold and initiate an action potential.
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