KROK 1 2015 – Question 172 · KROK (Medicine) · Physiology

Microelectrode analysis of nerve fiber bioelectrical activity revealed, that its membrane potential equals −90 mV. Its initial rest potential was −85 mV. What process occurs in this case?

  1. A. Depolarization
  2. B. Hyperpolarization
  3. C. Repolarization
  4. D. Supernormality
  5. E. Overshoot
Hint

Compare the new membrane potential with the original resting value and decide in which direction, relative to zero, the potential has shifted.

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