Zoology-(general)
NEET Zoology (general) MCQ Question
Type: MCQ-diagram based-Medium-Class 11
Consider a diagram of a neuron where a stimulus is applied at a specific point on the axon, causing a change in membrane permeability. What is the immediate effect of this stimulus on the membrane potential at that point?
A
The membrane becomes depolarized.
B
The membrane becomes hyperpolarized.
C
The membrane remains polarized.
D
The membrane potential reverses without depolarization.
Correct Answer
Option A
Detailed Explanation
When a stimulus is applied to the axon, the membrane at that site becomes permeable to Na+, leading to depolarization where the inner side becomes positively charged and the outer surface becomes negatively charged.
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