NitroprussideIsoproterenolFerricyanidesAdrenergic beta-AgonistsVasodilator AgentsReceptors, Adrenergic, betaNitric Oxide DonorsNitric OxideVasodilationAcetylcholineCyclic GMPPhenylephrineCyclic AMPPropranololForearmColforsinSympathomimeticsNorepinephrineHypotension, ControlledMuscle RelaxationAdenylate CyclaseEndothelium, Vascularomega-N-MethylarginineNG-Nitroarginine Methyl EsterBlood PressureDose-Response Relationship, DrugReceptors, AdrenergicVasoconstrictor AgentsNitric Oxide SynthaseMyocardial ContractionGuanylate CyclaseMyocardiumTrimethaphanHeart RateDogsEnzyme InhibitorsAdrenergic beta-AntagonistsRegional Blood FlowArginineRats, WistarCardiotonic AgentsReceptors, Adrenergic, beta-2Vascular ResistanceParotid GlandEpinephrineRats, Sprague-DawleyS-Nitroso-N-AcetylpenicillamineBucladesineNitroarginineDihydroalprenololHemodynamicsVasoconstrictionReceptors, Adrenergic, beta-1MolsidomineOxadiazolesCalcium8-Bromo Cyclic Adenosine MonophosphateNitroglycerinPropanolaminesMuscle, Smooth, VascularPindololPenicillamineCyclic AMP-Dependent Protein KinasesBradykininCatecholaminesIodocyanopindololAorta, ThoracicAdrenergic AgonistsRabbitsAdrenergic alpha-AgonistsGuinea PigsPhentolamineArteriolesAdenosineSympathetic Nervous SystemMuscle ContractionCells, Cultured1-Methyl-3-isobutylxanthineStimulation, ChemicalAlprenololCarbacholBaroreflexMuscle, SmoothVasomotor SystemMethoxaminePlethysmographyRats, Inbred StrainsInfusions, Intra-ArterialMethylene BlueCromakalimHeart VentriclesArteriesPhosphodiesterase InhibitorsPerfusionMesenteric ArteriesCoronary VesselsMyocytes, CardiacCyclic GMP-Dependent Protein KinasesAortaTime Factors