NorepinephrineNorepinephrine Plasma Membrane Transport ProteinsEpinephrineSympathetic Nervous SystemCatecholaminesAdrenergic Uptake InhibitorsDesipramineAdrenergic alpha-AgonistsHistamine ReleaseCalciumDopamineDopamine beta-HydroxylaseVasoconstrictor AgentsReceptors, Adrenergic, alphaRats, Sprague-DawleyDose-Response Relationship, DrugNeurotransmitter AgentsAdrenergic alpha-AntagonistsBlood PressureReceptors, AdrenergicTyramineReceptors, Adrenergic, alpha-2Locus CoeruleusSerotoninElectric StimulationDogsPropranololPhentolamineReceptors, Adrenergic, betaSympathomimeticsMethoxyhydroxyphenylglycolVasoconstrictionHeart RateCells, CulturedAdrenergic AgentsMicrodialysisAcetylcholineTime FactorsYohimbineBiogenic MonoaminesRats, Inbred StrainsKineticsPrazosinRats, WistarAdrenergic alpha-2 Receptor AntagonistsAdrenergic FibersDelayed-Action PreparationsReceptors, Adrenergic, alpha-1IsoproterenolNormetanephrineClonidineMyocardiumHemodynamicsNeurotransmitter Uptake InhibitorsNerve EndingsReserpineSynaptic TransmissionRabbitsHeartPotassiumVascular ResistanceAdrenergic AgonistsAdrenergic AntagonistsPropylaminesNeuronsRyanodine Receptor Calcium Release ChannelHypertensionMuscle ContractionPhenylephrineAdrenergic beta-AntagonistsSymportersAdrenergic alpha-1 Receptor AgonistsPerfusionAngiotensin IIAdenosine TriphosphatePotassium ChlorideVasopressinsNitric OxideSympatholyticsCyclic AMPGuinea PigsPresynaptic TerminalsAdrenergic alpha-2 Receptor AgonistsMesenteric ArteriesReninBiogenic AminesDroxidopaExocytosisStimulation, ChemicalTritiumAdrenergic NeuronsTyrosine 3-MonooxygenaseMuscle, Smooth, VascularHydroxydopaminesEnzyme Inhibitorsalpha-MethyltyrosineIdazoxanArteriesStellate Ganglion3-Iodobenzylguanidine