Q: dendrites/gates

Joseph Legris jalegris at xympatico.ca
Tue Mar 22 13:18:19 EST 2005


Kalman Rubinson wrote:
> On Mon, 21 Mar 2005 11:06:57 -0500, Joseph Legris
> <jalegris at xympatico.ca> wrote:
> 
> 
>>Kalman Rubinson wrote:
>>
>>>Well, another nit to pick is that the existence of a slightly
>>>decremented potential (such as the AP) at the internodal region
>>>requires neither transmembrane currents or membrane excitation, only a
>>>potential difference (which does exist).
>>>
>>>Kal
>>
>>Yes, but in a conducting medium, potential difference == current flow.
> 
> 
> But not between the inside and outside of an internodal region.
> 
> Kal
> 

O.K. but your statement above reduces to:

"the existence of a slightly decremented potential at the internodal 
region requires ... only a potential difference (which does exist).

What then is the cause of the decrement to the action potential between 
nodes?

-- 
Joe Legris




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