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17 Nov 2019
ION EXTRACELLULAR (mM) INTRACELLULAR (mM)
Na+ 145 12
K+ 5 148
Ca2+ 1.5 0.0001
Clâ 123 4 5.
For a cell that has a membrane potential of â70 mV, calculate the equilibrium potential and determine whether there will be an influx or an efflux of the following ions, given normal physiological ion concentrations. Assume there are channels that are open are permeable to the appropriate ions. Show your working. Nernst equation given at the end of this sheet.
a) Na+ b) Ca2+ c) K+
ION EXTRACELLULAR (mM) INTRACELLULAR (mM)
Na+ 145 12
K+ 5 148
Ca2+ 1.5 0.0001
Clâ 123 4 5.
For a cell that has a membrane potential of â70 mV, calculate the equilibrium potential and determine whether there will be an influx or an efflux of the following ions, given normal physiological ion concentrations. Assume there are channels that are open are permeable to the appropriate ions. Show your working. Nernst equation given at the end of this sheet.
a) Na+ b) Ca2+ c) K+
Hubert KochLv2
17 May 2019
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