Which term describes an action potential's inability to be triggered again immediately after firing, regardless of stimulus strength?
- A. Absolute refractory period ✓
- B. Resting potential
- C. Threshold potential
- D. Hyperpolarization
Correct answer
A. Absolute refractory period
Explanation
During the absolute refractory period, a neuron cannot fire another action potential regardless of stimulus strength, because voltage-gated sodium channels are inactivated.
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