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Systems Phys - CH5
Balliet fall 2010
Question | Answer |
---|---|
which ions are higher OUTSIDE the cell? | K, Mg, H, PO3-, sulfate, Protein |
Which ions are higher OUTSIDE | Na, Ca2+, HCO3-, Cl- |
What is the charge when the membrane is only permeable to POTASSIUM? | -94mV |
What is the charge when the membrane is only permeable to SODIUM? | +61mV |
Electrical potential that counters net diffusion of Na/K is called? | Na/K equilibrium potential |
Why is the Vm so close to Ek? | Membrane is more permeable to K than Na |
Na/K Nernst Potential | Ek = -61 log (Nai/Nao) or -61 log (Ki/Ko) [if a (-) ion (ex Cl) then chg (-) to (=)] |