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An action potential is described as digital because if threshold is not reached, it:
ADelays briefly
BDecays gently
CDoes not occur
DDoubles slowly
Answer & Solution
Correct answer: C. Does not occur
1. The event is all or nothing.
2. A partial depolarisation produces no spike.
3. So below threshold it does not occur.
_Source: OpenStax Anatomy and Physiology 2e, Chapter 12, The Nervous System and Nervous Tissue._
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