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Assertion: Refractory periods are a physiological phenomenon that occur in neurons and muscles.

Reason: During the refractory period, the neuron or muscle cell is temporarily unable to respond to a stimulus.



Option: 1

Assertion and reason are both true, and reason is an accurate account of assertion. 


Option: 2

Both assertion and reason are accurate, but reason does not adequately explain assertion.

Option: 3

The assertion is correct, but the reasoning is incorrect. 


Option: 4

Both the assertion and reason are incorrect.

Answers (1)


The assertion is correct, and the reason provides an accurate explanation of the refractory period. Refractory periods occur in both neurons and muscle cells and are characterized by a temporary period of insensitivity to stimuli. During this time, the cell is unable to generate an action potential or contract, respectively.

Option a is the correct answer.

Posted by

Sanket Gandhi

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