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Table 3 Solute transport properties

From: Development of a 3D finite element model of lens microcirculation

Symbol Description Value Units
kB Boltzmann constant 1.380 × 10−11 pJ/K
e Electron charge 1.6 × 10−10 nC
F Faraday constant 9.648 × 104 nC/nmol
DNa Free solution/cytoplasm Na+ diffusion1 1.39 × 10−6 mm2/s
DK Free solution/cytoplasm K+ diffusion1 2.04 × 10−6 mm2/s
DCl Free solution/cytoplasm Cl- diffusion1 2.12 × 10−6 mm2/s
DNai,c Intracellular Na+ diffusion 1.39 × 10−8 mm2/s
DKi,c Intracellular K+ diffusion 2.04 × 10−8 mm2/s
DCli,c Intracellular Cl- diffusion 2.12 × 10−8 mm2/s
DNae,c Extracellular Na+ diffusion 1.39 × 10−6 mm2/s
DKe,c Extracellular K+ diffusion 2.04 × 10−6 mm2/s
DCle,c Extracellular Cl- diffusion 2.12 × 10−6 mm2/s
gNa Na+ fibre cell membrane conductivity2 2.2 mS/m2
gCl Cl- fibre cell membrane conductivity2 2.2 mS/m2
gK K+ surface membrane conductivity2 2.1 S/m2
Imax Na+/K+ pump max. pump rate 0.478 A/m2
K1/2Na Na+/K+ pump 1/2 max Na+ concentration 9 mM
K1/2K Na+/K+ pump 1/2 max K+ concentration 3.9 mM
  1. References: 1. Benedek & Villas (2000) [32]; 2) Mathias (1985) [2].