Multiple choice

During depolarisation, permeability of neuron increases towards

  1. H+

  2. Na+

  3. Ag+

  4. Mg++
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

During depolarisation, permeability of neuron increases towards Na+, which changes the electrochemical gradient, which in turn produces a further rise in the membrane potential. This then causes more channels to open, producing a greater electric current across the cell membrane, and so on.

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