What is the all or nothing principle?

Basically this means that if the threshold voltage of a neurone is reached -40mV, then a stimulus will be generated of always +40mV. If the threshold is not reached then there will be no signal. 

KD

Related Biology A Level answers

All answers ▸

Describe the difference between the absorption spectrum and the action spectrum of a plant (photosynthesis)


How is heart rate controlled?


Explain the concept of 'threshold potential' in the initiation of an action potential


What does ADH do in the Kidney?