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Sodium channels

sodium channels

cell membrane glycoproteins selective for sodium ions. Fast sodium current is associated with the action potential in neural membranes.


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Too many ions inside a neuron cell. What happens?

For example, there are diseases where the sodium channel cannot gauge voltage difference effectively, and so it remains open, ... of sodium ions in the cell, and this disorder often affects potassium channels, so there is practically no way that the excess sodium ions can escape ...

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by Coelacanth
Tue Dec 03, 2013 1:34 am
 
Forum: General Discussion
Topic: Too many ions inside a neuron cell. What happens?
Replies: 1
Views: 1232

Re: Why must we avert the genome of Eden?

... yet they have many of the genes which required for building synapses (sodium channels). Again, this makes absolutely no sense in the Darwinian framework, but it makes perfect ...

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by wildfunguy
Fri Oct 04, 2013 7:49 pm
 
Forum: Evolution
Topic: Why must we avert the genome of Eden?
Replies: 6
Views: 7230

Why must we avert the genome of Eden?

... yet they have many of the genes which required for building synapses (sodium channels). Again, this makes absolutely no sense in the Darwinian framework, but it makes perfect ...

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by Hunor
Mon Sep 23, 2013 12:08 am
 
Forum: Evolution
Topic: Why must we avert the genome of Eden?
Replies: 6
Views: 7230

[NEUROSCIENCE]-Two Questions about AP Propagation

... the membrane potential AT WHICH sufficient number of Na+-voltage gated channels OPEN such that the membrane permability of sodium is greater than potassium, then HOW (in general) does the membrane potential get to ...

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by AbducensNucleus
Sun Aug 05, 2012 4:19 am
 
Forum: Human Biology
Topic: [NEUROSCIENCE]-Two Questions about AP Propagation
Replies: 5
Views: 5007

Impulse propagation/local circuits and repolarisation

... with local circuits. As far as i'm aware, repolarisation is due to K+ channels opening, thus outflow causes a fall back to membrane potential. Local circuits are caused because, the influx of sodium ions is attracted to the surrounding negative regions, they then move to ...

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by ADAS137
Sat Dec 31, 2011 4:16 pm
 
Forum: Human Biology
Topic: Impulse propagation/local circuits and repolarisation
Replies: 1
Views: 1257
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