Overview

all-or-none response


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A type of response that may be either complete and of full intensity or totally absent, depending on the strength of the stimulus; there is no partial response. For example, a nerve cell is either stimulated to transmit a complete nervous impulse or else it remains in its resting state; a stinging thread cell of a cnidarian is either completely discharged or it is not.

Subjects: Biological Sciences.


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