PropranololPhentolamineAdrenergic alpha-AntagonistsAdrenergic beta-AntagonistsReceptors, AdrenergicNorepinephrineReceptors, Adrenergic, alphaPhenoxybenzamineSympatholyticsEpinephrineIsoproterenolPractololPrazosinReceptors, Adrenergic, betaAtropineHeart RateYohimbineAdrenergic alpha-AgonistsPropanolaminesSympathomimeticsAdrenergic AntagonistsSympathetic Nervous SystemCatecholaminesClonidineReserpineElectric StimulationGuanethidineDogsBlood PressureMethysergideMuscle ContractionHexamethonium CompoundsAutonomic AgentsGuinea PigsPindololPhenylephrineAdrenergic beta-AgonistsAmino AlcoholsBretylium CompoundsNadololAtenololAcebutololMuscle, SmoothAlprenololTyramineDose-Response Relationship, DrugDrug InteractionsAdrenergic alpha-1 Receptor AntagonistsButoxamineDihydroergotoxineHydroxydopaminesMethoxamineAdrenergic alpha-2 Receptor AntagonistsOxymetazolineMoxisylyteAdrenergic AgonistsVas DeferensRegional Blood FlowMetoprololPapaverineCatsRats, Inbred StrainsHemodynamicsParasympatholyticsOxprenololStimulation, ChemicalHeartDesipramineDibenzylchlorethamineErgotamineErgoloid MesylatesAdrenergic AgentsVasoconstrictionAutonomic Fibers, PostganglionicParasympathetic Nervous SystemDepression, ChemicalTolazolineRabbitsNictitating MembraneBretylium TosylatePhysical ExertionDioxanesAutonomic Nervous SystemVagus NerveMuscle RelaxationVascular ResistanceMetaraminolLabetalolOctopamineEthanolaminesHexamethoniumPerfusionStereoisomerismAdrenalectomySerotoninAcetylcholineMyocardial ContractionNeuroeffector JunctionTripelennamineAnesthesia