State the all-or-none principle of action potentials.
State the all-or-none principle of action potentials.
A fast, random, propagating, and transitory change that occurs in response to a stimulus in the resting membrane potential of a nerve cell or muscle cell is defined as an action potential. Excitability is defined as the cell's property of generating an action potential.
It is stated by the all-or-none principle that the nerve or muscle fibre's strength by which it responds to a stimulus is independent of the stimulus's strength. A nerve or fibre muscle provides a complete response irrespective of the stimulus strength if the stimulus potential is above the threshold potential. Thus either there will be entire response generation, or there will be no response by the nerve or muscle fibre in response to a stimulus.
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