Chromaffin SystemChromaffin CellsChromaffin GranulesNorepinephrineAdrenal MedullaCatecholaminesAdrenal GlandsCattleExocytosisEpinephrinePhenoxybenzamineTyramineDopamine beta-HydroxylaseReserpineChromograninsChromogranin AAdrenergic alpha-AntagonistsPhentolamineDesipraminePhenylethanolamine N-MethyltransferaseCalciumSympathetic Nervous SystemElectric StimulationVas DeferensAdrenergic alpha-AgonistsPrazosinReceptors, AdrenergicReceptors, Adrenergic, alphaMetaraminolHydroxydopaminesYohimbineVeratridineDimethylphenylpiperazinium IodideSympathomimeticsPropranololAcetylcholineSympatholyticsMuscle ContractionGuanethidinePotassiumClonidineSerotoninDopamineCells, CulturedNictitating MembraneMethyltyrosinesNicotineGuinea PigsSecretory VesiclesDigitoninEnkephalin, MethionineBretylium CompoundsPara-Aortic BodiesDose-Response Relationship, DrugTyrosine 3-MonooxygenaseCatsMembrane PotentialsSplanchnic NervesHexamethonium CompoundsReceptors, Adrenergic, alpha-2Receptors, Adrenergic, alpha-1IsoproterenolRats, Inbred StrainsMethoxamineMesenteric ArteriesMuscle, SmoothIdazoxanDioxanesRabbitsNeurotransmitter AgentsPheochromocytomaKineticsRats, WistarVasoconstrictionMuscarineNerve EndingsAdrenergic Uptake InhibitorsPargylineArteriesBariumCocaineEnkephalinsAdenosine TriphosphateDihydroxyphenylalaninePotassium ChlorideMethoxyhydroxyphenylglycolCytoplasmic GranulesTime FactorsMuscle, Smooth, VascularTetrabenazineAdrenergic alpha-2 Receptor AntagonistsHistamineStimulation, ChemicalAtropineVasoconstrictor AgentsTritiumIntracellular MembranesPerfusionCalcium Channel BlockersChromogranin B