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Question

The initial depolarization of the nerve cell membrane involves the movement of ........... ions into the cell.

A
Sodium
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B
Potassium
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C
Chlorine
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D
All of the above
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Solution

The correct option is A Sodium
Polarization events help in the conduction of nerve impulses between nerve cells. Depolarization and repolarization are the events involved in them. In depolarization, the charge from negative shifts to the positive by opening sodium and potassium influx. Thus sodium ions move inside the cell during depolarization. So, the correct answer is option A.

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