getElapsedTime(simulator) ( total_cytoplasmic_Ca_flux_I_Ca /( 2.0 * total_cytoplasmic_Ca_flux_F * total_cytoplasmic_Ca_flux_v_i * total_cytoplasmic_Ca_flux_k_i )) environment_time ( Ca_extrusion_across_the_plasma_membrane_J_extru + Ca_extrusion_across_the_plasma_membrane_J_ICa ) (( Ca_extrusion_across_the_plasma_membrane_k_leak *( Ca_extrusion_across_the_plasma_membrane_Ca_i - Ca_extrusion_across_the_plasma_membrane_Ca_o ))+( Ca_extrusion_across_the_plasma_membrane_Vmax_extru /( 1.0 +pow(( Ca_extrusion_across_the_plasma_membrane_EC50_extru / Ca_extrusion_across_the_plasma_membrane_Ca_i ), Ca_extrusion_across_the_plasma_membrane_n_extru )))) total_cytoplasmic_Ca_flux_J_ICa cytoplasmic_calcium_Ca_i environment_time ( Ca_uptake_by_SR_Ca_ATPase_Vmax_SERCA /( 1.0 +pow(( Ca_uptake_by_SR_Ca_ATPase_EC50_SERCA / Ca_uptake_by_SR_Ca_ATPase_Ca_i ), Ca_uptake_by_SR_Ca_ATPase_n_SERCA ))) cytoplasmic_calcium_Ca_i environment_time ( ER_Ca_release_J_SERCA + ER_Ca_release_J_release ) ( ER_Ca_release_P_basal +( ER_Ca_release_Pmax_RyR /( 1.0 +pow(( ER_Ca_release_EC50_RyR / ER_Ca_release_Ca_i ), ER_Ca_release_n_RyR )))) ( ER_Ca_release_P_ER *( ER_Ca_release_Ca_i - ER_Ca_release_Ca_ER )) Ca_uptake_by_SR_Ca_ATPase_J_SERCA cytoplasmic_calcium_Ca_i intraluminal_calcium_Ca_ER environment_time ( cytoplasmic_calcium_J_pm + cytoplasmic_calcium_J_ER ) ER_Ca_release_J_ER Ca_extrusion_across_the_plasma_membrane_J_pm getElapsedTime(simulator) (( intraluminal_calcium_v_ER * intraluminal_calcium_k_ER )/( intraluminal_calcium_v_i * intraluminal_calcium_k_i )) cytoplasmic_calcium_Ca_i total_cytoplasmic_Ca_flux_v_i total_cytoplasmic_Ca_flux_k_i ER_Ca_release_J_ER Ca_uptake_by_SR_Ca_ATPase_J_SERCA getElapsedTime(simulator)