Under normal conditions a nerve impulse is initiated by an appropriate stimulus called:
Correct answer: A. Threshold stimulus
- A. Threshold stimulus
- B. Active membrane potential
- C. Resting membrane potential
- D. All of the above
Explanation
A threshold stimulus is the minimum effective stimulation needed to initiate a nerve impulse. Resting and active membrane potentials are electrical states, not the initiating stimulus itself.
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