The all-or-none phenomenon as applied to nerve conduction states that the whole nerve cell must be stimulated for conduction to take place.

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The all-or-none phenomenon refers to the principle that once a nerve impulse is initiated, it will travel along the neuron all the way to the end without decreasing in strength, but it does not require the whole nerve cell to be stimulated for conduction to take place; rather, it requires reaching a certain threshold of stimulation at the trigger zone.

The All-Or-None Phenomenon as Applied to Nerve Conduction States That