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 ▸What is the role of mitochondria in animal cells?
How does the Meselson and Stahl Experiment provide evidence for the semi conservative theory of DNA replication?
The binding of one molecule of oxygen to haemoglobin makes it easier for a second oxygen molecule to bind, explain why.
Describe and explain the process of saltatory conduction. Diagrams may be used.