PhentolamineAdrenergic alpha-AntagonistsPropranololReceptors, Adrenergic, alphaNorepinephrineReceptors, AdrenergicPhenoxybenzamineSympatholyticsEpinephrinePrazosinYohimbineAdrenergic alpha-AgonistsAtropineClonidineMethysergideSympathomimeticsSympathetic Nervous SystemGuanethidineElectric StimulationIsoproterenolReserpineMuscle ContractionHexamethonium CompoundsAdrenergic AntagonistsAutonomic AgentsAdrenergic beta-AntagonistsBretylium CompoundsCatecholaminesPhenylephrineGuinea PigsDihydroergotoxineTyramineAdrenergic alpha-2 Receptor AntagonistsAdrenergic alpha-1 Receptor AntagonistsErgoloid MesylatesPapaverineOxymetazolineVas DeferensMuscle, SmoothMoxisylyteMethoxamineDibenzylchlorethamineDogsReceptors, Adrenergic, betaAutonomic Fibers, PostganglionicErgotamineDesipramineTolazolineHydroxydopaminesVasoconstrictionButoxamineBlood PressureCatsRegional Blood FlowDibenzazepinesHeart RateAmino AlcoholsNicergolineOctopamineAlprenololDioxanesRats, Inbred StrainsParasympatholyticsDrug InteractionsMetaraminolNeuroeffector JunctionStimulation, ChemicalDose-Response Relationship, DrugPractololTripelennaminePenile ErectionBretylium TosylateParasympathetic Nervous SystemAdrenergic AgonistsTetralonesMaprotilineNictitating MembraneRabbitsAdrenergic AgentsHexamethoniumIdazoxanMuscle, Smooth, VascularAdrenergic beta-AgonistsAdrenergic FibersSerotoninVascular ResistanceAdrenalectomyAcetylcholineLysergic Acid DiethylamideMuscle RelaxationArteriesTetrodotoxinReceptors, Adrenergic, alpha-2Vagus NerveHeartPerfusionFetal MovementAutonomic Nervous SystemCromakalimNordefrin