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Grade: 11
        Respected teacher,During repolarization potassium ions move outside the axonal membrane . Shouldn`t it be the sodium ions moving out as their concentration is more outside the membrane to regain the resting potentialThank you in advance for the answer
one year ago

Answers : (1)

Dr.Adam Shaik
askIITians Faculty
382 Points
							Hai, Navdeep Dhingra,Interesting question.
1.The Na+ channels are closed during repolarization stage,
(Thus K+ causes balance in charge) where as K+ channels facilitate the movement of Na+ ions outside the membrane
This occurs becasue the Potassium ion channels allow both Na+ and K+.
Later the number of potassium ions decreases outside the membrane.
Go through the below image for further clarification.
The yellow doors represent Na+ ion channels
and blue are for K+ ion channels
519-1345_7-neurons-20-638.jpg
one year ago
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