Table 2.

Parameters Used in the Electromotility Model

Parameters	Description	Values	References
R (J/mol/K)	ideal gas constant	8.3145	physical constant
T (K)	absolute temperature	300	room temperature
F (C/mol)	Faraday’s constant	96,485.3	physical constant
$r_0$ (μm)	initial cell radius	9.1	average value in the experiment
h (μm)	effective cortical thickness	0.5	(15)
${\sigma }_p$ (Pa)	passive membrane stress	$1\times {10}^2$	estimated from force balance
${\sigma }_a$ (Pa)	active contraction	$-3\times {10}^3$	estimated from force balance
$N^{-}$ (mol)	total intracellular area	$3.9\times {10}^{-13}$	estimated from intracellular osmolarity
α (m/s/Pa)	water permeability	$3.0\times {10}^{-11}$	(15, 46)
$G_{0,\text{Na}}$ (mol2/Kg/m3)	Na channel constant	$0.005G_{0,\text{K}}$	based on (25)
$G_{0,\text{K}}$ (mol2/Kg/m3)	K channel constant	$1.6\times {10}^{-9}$	fitting parameter
$G_{0,\text{Cl}}$ (mol2/Kg/m3)	Cl channel constant	$0.25G_{0,\text{K}}$	based on (25)
$c_{\text{ATP}}$ (mol/m3)	ATP concentration	1	fitting parameter
${\alpha }_{\text{ATP}}$ (m/s)	coefficient in $J_{\text{Na}/\text{K}}$	0.1	fitting parameter
${\alpha }_{\text{Na}/\text{K},\text{Na}}$	constant in $J_{\text{Na}/\text{K}}$	0.01	fitting parameter
${\alpha }_{\text{Na}/\text{K},\text{K}}$	constant in $J_{\text{Na}/\text{K}}$	0.1	fitting parameter
${\alpha }_{\text{NKCC}}$ (mol/m2/s)	coefficient in $J_{\text{NKCC}}$	$1\times {10}^{-10}$	fitting parameter
${\beta }_1$	constant in $T_m$	10	fitting parameter
${\beta }_2$ (N/m)	constant in $T_m$	$3.0\times {10}^{-5}$	fitting parameter
${\beta }_3$	constant in $G_V$	1.5	fitting parameter
${\beta }_4$ (mV)	constant in $G_V$	$-92$	fitting parameter