Multiple choice

During transmission of nerve impulse the potential of the membrane shows the following types of charges:

  1. First positive then negative and back positive.

  2. First negative then positive and back negative.

  3. First positive then negative and remain negative.

  4. First negative then positive and remain positive.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

During an action potential, the resting membrane potential is negative. Upon stimulation, depolarization makes the interior positive, followed by repolarization, which returns the membrane to a negative potential.

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