NorepinephrineCatecholaminesNorepinephrine Plasma Membrane Transport ProteinsEpinephrineAdrenal MedullaDopamine beta-HydroxylaseReceptors, CatecholamineSympathetic Nervous SystemDopamineReceptors, AdrenergicNormetanephrineAdrenergic Uptake InhibitorsDesipraminePropranololAdrenergic alpha-AgonistsPheochromocytomaChromaffin SystemChromaffin CellsReserpineAdrenal GlandsTyrosine 3-MonooxygenaseIsoproterenolReceptors, Adrenergic, alphaAdrenergic alpha-AntagonistsPhentolamineVanilmandelic AcidTyramineBlood PressureReceptors, Adrenergic, betaHeart RateChromaffin GranulesAdrenal Gland NeoplasmsSympathomimeticsMetanephrineVasoconstrictor AgentsMethoxyhydroxyphenylglycolDihydroxyphenylalanineMethyltyrosinesalpha-MethyltyrosinePhenylethanolamine N-MethyltransferaseReceptors, Adrenergic, alpha-2HydroxydopaminesDogsAdrenergic beta-AntagonistsYohimbineAdrenergic FibersLocus CoeruleusCatecholamine Plasma Membrane Transport ProteinsAdrenergic AgentsDose-Response Relationship, DrugHemodynamicsAdrenergic AgonistsChromogranin ASplanchnic NervesRats, Sprague-DawleyPrazosinSerotoninAdrenergic AntagonistsClonidineSympatholyticsMonoamine OxidaseReceptors, Adrenergic, alpha-1Biogenic MonoaminesVasoconstrictionHeartNeurotransmitter AgentsAdrenergic beta-AgonistsElectric StimulationAcetylcholinePhenylephrineSympathectomy, ChemicalHypertensionRats, Inbred StrainsAdrenergic alpha-2 Receptor Antagonists