ClonidineAdrenergic AgonistsAdrenergic alpha-AgonistsAdrenergic alpha-2 Receptor AgonistsMedetomidineAdrenergic beta-AgonistsAdrenergic alpha-1 Receptor AgonistsReceptors, Adrenergic, alphaPhenylephrineYohimbineReceptors, Adrenergic, alpha-2Adrenergic alpha-AntagonistsClenbuterolTerbutalineReceptors, AdrenergicMethoxamineIsoproterenolNorepinephrineEpinephrineMetaproterenolSympatholyticsGuanfacinePrazosinDexmedetomidineFenoterolDioxolesIdazoxanInjections, SpinalDose-Response Relationship, DrugReceptors, Adrenergic, betaNordefrinAdrenergic beta-2 Receptor AgonistsDioxanesImidazolesQuinoxalinesPropranololProcaterolReceptors, Adrenergic, alpha-1PhentolamineReceptors, Adrenergic, beta-3Adrenergic beta-3 Receptor AgonistsSympathomimeticsDopamine AgonistsRats, Sprague-DawleyPreanesthetic MedicationHypnotics and SedativesXylazineAnalgesicsReceptors, Adrenergic, beta-2EthanolaminesAlbuterolAdrenergic beta-AntagonistsImidazoline ReceptorsPhenoxypropanolaminesCyclic AMPBlood PressureAdipose Tissue, BrownDrug InteractionsCatecholaminesHeart RateAutonomic AgentsRats, WistarMidodrineCholinergic AgonistsRats, Inbred StrainsCyclic CMPNaloxoneLocus CoeruleusPropanolaminesAdrenergic AntagonistsGABA AgonistsHemodynamicsAdrenergic AgentsCarbacholOxymetazolineAnalgesics, Non-NarcoticCells, CulturedMuscarinic AgonistsDihydroalprenololAdrenergic alpha-2 Receptor AntagonistsSympathetic Nervous SystemDouble-Blind MethodPurinergic P1 Receptor AgonistsPertussis ToxinPhenoxyacetatesFluocinolone AcetonideAlprenololLacrimal ApparatusPhenoxybenzamineCalciumParasympathomimeticsDogsNicotinic AgonistsMorphineAdjuvants, AnesthesiaColforsinTime FactorsVirulence Factors, BordetellaVasopressinsAdrenergic alpha-1 Receptor Antagonists