Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Medical
  •  During depolarisation, there isOption: 1 Efflux of <img alt="Cl^{-}" src="https://learn.careers360.com/latex-image/?%5Cinli

 During depolarisation, there is

Option: 1

Efflux of Cl^{-}


Option: 2

Influx of Na^{+}


Option: 3

Influx of K+ K^{+}


Option: 4

Efflux of K^{+}


Answers (1)

best_answer
 

As we have learnt.

When a stimulus (may be mechanical, electrical or chemical) is applied to the membrane of the nerve fibre, its permeability changes and sodium-potassium pump stop operating. Sodium ions rush inside and potassium ions rush outside. This results in the positive charge inside (axoplasm) and negative charge outside (ECF). The stimulus-gated channels are opened by the stimulus and voltage-gated sodium channels are opened by the threshold stimulus. The polarity of the axon membrane that is now conducting the nerve impulse is called the action potential (+30\: mV). Such a membrane is called depolarised.

Hence, the correct answer is option b.

 

Posted by

Info Expert 30

View full answer

NEET 2024 Most scoring concepts

    Just Study 32% of the NEET syllabus and Score up to 100% marks

Similar Questions

Trending Articles/News

anam-khan

Punjab’s new 2-year MBBS bond, fee hike ‘exploitation’, ‘unfair’; interns, doctors shut OPDs in protest
anam-khan

NEET UG 2025 counselling likely to begin on July 1; AIQ seat allocation, court hearing updates
anam-khan

NEET UG: Delhi HC seeks NTA's response on plea alleging defective biometric system at centre

Latest Question