Distribution of lons Across plasma Membranes ENa =+65 mV 90 mV Na+=145 mM C|=115mM Na+=12 mM C|=3.6mM K+=160mM Em=-90 mV (resting membrane potential) K+=3.5mM EK=-100 mV
Distribution of Ions Across Plasma Membranes
The Chord Conductance Equation gKE Na K Ee Where ∑g=k+吕M+ga Em membrane potential equilibrium potentials of the ion s conductance of the membrane to the ion s the more permeable, the greater the conductance
The Chord Conductance Equation Cl Cl Na Na K K m E g g E g g E g g E + + = where Em membrane potential Es equilibrium potentials of the ion s gs conductance of the membrane to the ion s. the more permeable, the greater the conductance. g = gK + gNa + gCl