TABLE 1.

Physical constants and ionic concentrations

Parameter	Definition	Value
F	Faraday constant	9.65 × 104 C/mol
R	Universal gas constant	8.314J mol–1K–1
T	Temperature	308 K
Nao	External sodium concentration	140 mM
Cao	External calcium concentration	1.8 mM
υi	Cell volume	10−4μl
υs	Submembrane volume	0.1 vi