Which of the following events is not observed during the depolarisation of the nerve fibre? why ? A. The potassium ions leave the fibre at a faster rate than sodium ions B. The permeability of the membrane toward sodium ions increases C. The sodium ions move inside the membrane D. The nerve fibre becomes positively charged
Answers
Answered by
1
option A is not observed
rashmiigupta9:
give reasons for your answer
during depolarization the Na K pump is closed and K voltage gates channels are closed ..hence there is no role of K in active potential or depolarization ...plz mark it as brainliest
Answered by
0
Here, option A is the correct answer.
When a electrical stimulus is received by a nerve fibre a potential action gets generated.
Therefore the membrane becomes porous to the sodium ions as compared to the potassium ions.
Therefore, this gives rise to a positive amount of charge inside of the nerve fibre while the outside has negative charge.
The membrane thereby becomes depolarized.
Similar questions