(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 Questions

Class 11

Biology Questions

Chapter

Neural Control and Coordination

Subtopic

Generation and conduction of Nerve Impulse

Select the correct option for the sodium-potassium pump.

Medium

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Which of the following acts is responsible for the depolarisation of the neuron?

Medium

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Assertion $(A)$: The axonal membrane of the neuron is more permeable to sodium ion $(Na^+)$ and nearly impermeable to potassium $(K^+)$.
Reason $(R)$: In a resting state,a neuron does not conduct any impulse.

MediumAIIMS 2016

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During the transmission of a nerve impulse through a nerve fibre,the potential on the inner side of the plasma membrane has which type of electric change?

MediumAIPMT 2007

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$A$ nerve impulse is generated in a nerve fiber when the membrane becomes more permeable 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

Select the correct option for the sodium-potassium pump.

Which of the following acts is responsible for the depolarisation of the neuron?

Assertion $(A)$: The axonal membrane of the neuron is more permeable to sodium ion $(Na^+)$ and nearly impermeable to potassium $(K^+)$.Reason $(R)$: In a resting state,a neuron does not conduct any impulse.

During the transmission of a nerve impulse through a nerve fibre,the potential on the inner side of the plasma membrane has which type of electric change?

$A$ nerve impulse is generated in a nerve fiber when the membrane becomes more permeable 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.

Assertion $(A)$: The axonal membrane of the neuron is more permeable to sodium ion $(Na^+)$ and nearly impermeable to potassium $(K^+)$.
Reason $(R)$: In a resting state,a neuron does not conduct any impulse.