all or nothing law

• what is the action potential threshold


  -55mV
• what happens if the intensity of the stimulus doesn't pass the threshold


  there will be no action potential initiated
• why is the action potential threshold what it is


  to ensure that low level stimuli is filtered out
• what is the action potential size every time


  +40mv
• what is the all or nothing rule


  an action potential is either initiated or it is not and it is always the same size
• what is meant by the size the impulse being independent of the size of the stimulus


  it means that the size of the impulse will always be the same no matter how big the stimulus is
• what will a larger stimulus mean about the impulses


  it will produce a greater frequency of impulses