Model is underconstrained.
The following variables couldn't be defined:
 * Ca_max in component calcium_transient
 * tau_Ca in component calcium_transient
 * Ca_o in component calcium_transient
 * Ca_b in component TnC_Ca_binding_kinetics
 * lambda in component TnC_Ca_binding_kinetics
 * Ca_b_max in component TnC_Ca_binding_kinetics
 * rho_0 in component TnC_Ca_binding_kinetics
 * rho_1 in component TnC_Ca_binding_kinetics
 * To in component thin_filament_kinetics
 * T in component crossbridge_kinetics
 * C_50 in component thin_filament_kinetics
 * pC_50 in component thin_filament_kinetics
 * pC_50_ref in component thin_filament_kinetics
 * n in component thin_filament_kinetics
 * n_ref in component thin_filament_kinetics
 * alpha_0 in component thin_filament_kinetics
 * T_ref in component thin_filament_kinetics
 * beta_0 in component thin_filament_kinetics
 * beta_1 in component thin_filament_kinetics
 * beta_2 in component thin_filament_kinetics
 * a in component crossbridge_kinetics
 * Q in component crossbridge_kinetics
 * A1 in component crossbridge_kinetics
 * A2 in component crossbridge_kinetics
 * A3 in component crossbridge_kinetics
 * alpha_1 in component crossbridge_kinetics
 * alpha_2 in component crossbridge_kinetics
 * alpha_3 in component crossbridge_kinetics
 * tau in component crossbridge_kinetics
 * dlambda_dt in component crossbridge_kinetics
 * d/dt Ca_i in component calcium_transient
 * d/dt Ca_b in component TnC_Ca_binding_kinetics
 * d/dt z in component thin_filament_kinetics