(C) The generation of an action potential in the nervous system occurs due to the rapid influx of $Na^+$ ions into the axoplasm through voltage-gated

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Assertion is correct,but Reason is incorrect.

(C) The generation of an action potential in the nervous system occurs due to the rapid influx of $Na^+$ ions into the axoplasm through voltage-gated sodium channels.This influx causes depolarization of the axonal membrane.The Reason statement is incorrect because the influx of $Na^+$ ions is driven by the electrochemical gradient,not by the efflux of $K^+$ ions.In fact,during the depolarization phase,$K^+$ channels are typically closed.

Class 11 Biology Neural Control and Coordination Generation and conduction of Nerve Impulse

Medium

$A$: In the nervous system,the generation of an action potential depends upon the influx of sodium ions into the axoplasm.
$R$: The influx of sodium ions during nerve impulse generation is due to the efflux of potassium ions.

A
Assertion and Reason both are correct and Reason is the correct explanation of Assertion.
B
Assertion and Reason both are correct but Reason is not the correct explanation of Assertion.
C
Assertion is correct,but Reason is incorrect.
D
Both Assertion and Reason are incorrect.

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Class 11

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Neural Control and Coordination

Subtopic

Generation and conduction of Nerve Impulse

$A$ neuron becomes an electrically charged cell primarily due to the differential permeability and diffusion of which ion?

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The resting potential of the membrane is

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Give scientific reasons:
$(1)$ In an excited nerve fibre region,a positive charge is created inside the plasma membrane.
$(2)$ In some animals,the conduction of nerve impulses is saltatory.

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$A$ nerve impulse will travel through a nerve fibre only if the membrane suddenly becomes more permeable to

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At the site of stimulation,the charge of the inner and outer surface of the membrane becomes reversed due to:

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$A$: In the nervous system,the generation of an action potential depends upon the influx of sodium ions into the axoplasm.$R$: The influx of sodium ions during nerve impulse generation is due to the efflux of potassium ions.

Similar Questions

$A$ neuron becomes an electrically charged cell primarily due to the differential permeability and diffusion of which ion?

The resting potential of the membrane is

Give scientific reasons:$(1)$ In an excited nerve fibre region,a positive charge is created inside the plasma membrane.$(2)$ In some animals,the conduction of nerve impulses is saltatory.

$A$ nerve impulse will travel through a nerve fibre only if the membrane suddenly becomes more permeable to

At the site of stimulation,the charge of the inner and outer surface of the membrane becomes reversed due to:

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$A$: In the nervous system,the generation of an action potential depends upon the influx of sodium ions into the axoplasm.
$R$: The influx of sodium ions during nerve impulse generation is due to the efflux of potassium ions.

Give scientific reasons:
$(1)$ In an excited nerve fibre region,a positive charge is created inside the plasma membrane.
$(2)$ In some animals,the conduction of nerve impulses is saltatory.