PhentolamineAdrenergic alpha-AntagonistsPropranololReceptors, Adrenergic, alphaNorepinephrineReceptors, AdrenergicPhenoxybenzamineEpinephrineSympatholyticsPrazosinYohimbineAdrenergic alpha-AgonistsClonidineAtropineMethysergideSympathomimeticsSympathetic Nervous SystemElectric StimulationGuanethidineIsoproterenolReserpineMuscle ContractionAdrenergic beta-AntagonistsHexamethonium CompoundsAdrenergic AntagonistsAutonomic AgentsCatecholaminesBretylium CompoundsGuinea PigsPhenylephrineTyramineDogsDihydroergotoxineAdrenergic alpha-2 Receptor AntagonistsAdrenergic alpha-1 Receptor AntagonistsPapaverineErgoloid MesylatesMuscle, SmoothOxymetazolineVas DeferensMoxisylyteReceptors, Adrenergic, betaMethoxamineDibenzylchlorethamineBlood PressureDrug InteractionsAutonomic Fibers, PostganglionicDesipramineErgotamineHeart RateHydroxydopaminesTolazolineRats, Inbred StrainsVasoconstrictionRegional Blood FlowCatsButoxamineDibenzazepinesAmino AlcoholsOctopamineDioxanesNicergolineRabbitsAlprenololParasympatholyticsStimulation, ChemicalMetaraminolPractololTime FactorsPenile ErectionNeuroeffector JunctionRadiation DosageParasympathetic Nervous SystemAdrenergic AgonistsTripelennamineAdministration, OralLethal Dose 50Dose-Response Relationship, DrugBretylium TosylateMaprotilineTetralonesNictitating MembraneAdrenergic beta-AgonistsSerotoninInjections, IntravenousAdrenergic AgentsVascular ResistanceIdazoxanHexamethoniumMuscle, Smooth, VascularAcetylcholineHeartAdrenalectomyCocaineAdrenergic FibersLysergic Acid DiethylamideArteriesInjectionsPerfusionMuscle Relaxation