The name is absent

Symbol

SI units

Physical meaning

Notes

Ra

^ω

Axial (intracellular) resistance

For a segment of cable
with a fixed length and
fixed diameter

Re_____

^ω

Extracellular resistance

Rm___

^ω

Membrane resistance

Cm___

F

Membrane capacitance

_ri_______

Ω∕m

Cytoplasmic resistivity

For unit length of cable
with fixed diameter

^re______

Ω∕m

Extracellular resistivity

^rm____

Ω.m

Membrane resistivity

cm____

F/m

Membrane capacitance

Ra

Ω.m

Specific axial resistance

For unit length and unit
diameter (i.e. unit volume
or surface area of cable)

RE

Ω.m

Specific extracellular resistance

Rm___

Ω.m²

Specific membrane resistance

Gm___

S.m^-2

Specific membrane conductance

CM

F/m²

Specific membrane capacitance

Vm

V

Transmembrane voltage