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Nerve Impulse Conduction

Assertion : N...

Question

Assertion : Na and K ions are necessary for muscle contraction
Reason : Na and K concentration changes across the muscle cell membrane resulting in development of potential difference

A

Both assertion and reason are true and reason is the correct explanation of assertion

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B

Both assertion and reason are true but reason is not the correct explanation of assertion

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C

Assertion is true but reason is false

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D

Both assertion and reason are false

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Solution

The correct option is D Both assertion and reason are false
Calcium ions are the ions that plays an important role in muscle contraction.

Na and K ions are involved in generation and conduction of nerve impulses along axons. The changes in concentration of Na and K ions across the axon, brings about a change in potential difference which causes the conduction of nerve impulses.

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