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STD 11 - 18. Neural control and coordination — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYSTD 11 - 18. Neural control and coordination1 Mark
MCQ
Depolarization of a stimulated nerve is maintained by
  • A
    $C{a^{ + + }}$
  • B
    $C{l^ - }$
  • C
    $M{g^{ + + }}$
  • ✓
    ${K^ + }$
✓

Answer

Correct option: D.
${K^ + }$
d
(d) Efflux of ${K^ + }$ causes repolarization.

Therefore it is the movement of ${K^ + }$ that maintains the depolarized state.

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