PhentolamineAdrenergic alpha-AntagonistsPropranololReceptors, Adrenergic, alphaNorepinephrineReceptors, AdrenergicPhenoxybenzamineEpinephrinePrazosinSympatholyticsAdrenergic alpha-AgonistsYohimbineAtropineClonidineAdrenergic beta-AntagonistsIsoproterenolElectric StimulationSympathetic Nervous SystemMethysergideSympathomimeticsMuscle ContractionGuanethidineAdrenergic AntagonistsGuinea PigsReserpineHexamethonium CompoundsPhenylephrineMuscle, SmoothAutonomic AgentsAdrenergic alpha-1 Receptor AntagonistsCatecholaminesBretylium CompoundsDose-Response Relationship, DrugReceptors, Adrenergic, betaCationsDihydroergotoxineTyramineAdrenergic alpha-2 Receptor AntagonistsDogsFlufenamic AcidErgoloid MesylatesPapaverineVasoconstrictionOxymetazolineVas DeferensMembrane PotentialsMoxisylyteBlood PressureCalciumMethoxamineDrug InteractionsDibenzylchlorethamineHeart RateAutonomic Fibers, PostganglionicRats, Sprague-DawleyErgotamineRegional Blood FlowAdrenergic AgonistsDesipramineTolazolineHydroxydopaminesAdrenergic beta-AgonistsCyclooxygenase 2 InhibitorsIon ChannelsCatsParasympatholyticsPropanolaminesButoxamineMuscle, Smooth, VascularAcetylcholineRabbitsDibenzazepinesStimulation, ChemicalRats, Inbred StrainsAmino AlcoholsTRPC Cation ChannelsNicergolineOctopamineAlprenololDioxanesCyclooxygenase InhibitorsRats, WistarReceptors, Adrenergic, alpha-1VasodilationMetaraminolNeuroeffector JunctionImidazolesReceptors, Adrenergic, alpha-2HeartMuscle RelaxationPhenethylaminesMuscarinic AntagonistsSerotoninPractololTripelennaminePenile ErectionBretylium TosylateVascular ResistancePotassium ChannelsParasympathetic Nervous System