NEETZoology-Neural Control and Coordination
NEET Zoology Nerve Impulse Assertion Reason Question
Type: Assertion Reason-conceptual-Medium-Class 11
Assertion: Axoplasm inside the axon contains high concentration of K⁺ low concentration of Na⁺ when neuron is not conducting any impulse. Reason: The axonal membrane is comparatively more permeable to potassium ions (K⁺) and nearly impermeable to sodium ions (Na⁺).
A
Both A and R are true and R is the correct explanation of A.
B
Both A and R are true, but R is not the correct explanation of A.
C
A is true, but R is false.
D
Both A and R are false.
Correct Answer
Option A
Detailed Explanation
The resting potential of a neuron is maintained by the differential permeability of the axonal membrane to K⁺ and Na⁺ ions.
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