Walk through axon diameter as it pertains to resistance and lambda.
the greater the diameter, the less resistance there will be. (bigger highway, more traffic can pass)
the smaller the resistance, the easier it is for the current to flow, thus it will be able to cover more ground (have a higher lambda) before it decays
How many controls are there on a Na voltage gated ion channel?
there are 2. the middle core can squeeze shut, this is the usual closed form. then, while the middle pore is open and ions are rushing in, there is another gate that swings suddenly shut. this is the inactivated form. the pore squeezes shut again, and the gate swings open, leaving the 'closed' form of the voltage gated ion channel Edit