A hypothetical neuronal cell shows the following intracellular and extracellular concentration of sodium, potassium, calcium, and chloride ions. Extracellular concentration (mM) Intracellular concentration (mM) (Ion)out/ (Ion)inside E ion at 37 oC Sodium ion 420 60 Potassium ion 25 420 Calcium ion 16 0.4 Chloride 565 45 Calculate the Nernst potential of these ions at 37 oC . Show your work.
A hypothetical neuronal cell shows the following intracellular and extracellular concentration of sodium, potassium, calcium, and chloride ions.
|
|
Extracellular concentration (mM) |
Intracellular concentration (mM) |
(Ion)out/ (Ion)inside |
E ion at 37 oC |
|
Sodium ion |
420 |
60 |
|
|
|
Potassium ion |
25 |
420 |
|
|
|
Calcium ion |
16 |
0.4 |
|
|
|
Chloride |
565 |
45 |
|
|
- Calculate the Nernst potential of these ions at 37 oC . Show your work.
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The Nernst equation is that equation which can be used to evaluate the electrode potential at any conditions of pressure, temperature and the concentration for an electrode.
The mathematical formula that can be applied to evaluate the Nernst potential for an ion is;
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