T
ypical ion concentrations and permeabilities for mammalian membranes.
Ion
Cell (mM)
Blood (mM)
Permeability (cm/s)
potassium
140
5
5 x 10
-7
sodium
5-15
145
5 x10
-9
chloride
4
110
1 x 10
-8
X- (neg. macromol.)
138
9
0