Mesenteric ArteriesMesenteric Artery, SuperiorAortaMesenteric Artery, InferiorArteriesAorta, ThoracicMesenteric Vascular OcclusionCeliac ArteryAorta, AbdominalSuperior Mesenteric Artery SyndromePulmonary ArteryRenal ArteryMuscle, Smooth, VascularVasodilationVasoconstrictionCerebral ArteriesCarotid ArteriesFemoral ArterySplanchnic CirculationBasilar ArteryVasoconstrictor AgentsVasodilator AgentsMesenteric VeinsBiological FactorsEndothelium, VascularIliac ArterySplenic ArteryNorepinephrinePhenylephrineCoronary Artery BypassRats, WistarVertebral ArteryHepatic ArteryAcetylcholineRadial ArteryMyographyMammary ArteriesSubclavian ArteryTomography, X-Ray ComputedRats, Inbred WKYMuscle RelaxationMuscle ContractionRats, Sprague-DawleyCarotid Artery, InternalBlood PressureNitric OxideDuodenostomyAngiographyDose-Response Relationship, DrugCoronary VesselsCarotid Artery DiseasesBrachial ArteryTime FactorsRats, Inbred SHRVena Cava, SuperiorRabbitsSuperior ColliculiTreatment OutcomeEndothelium-Dependent Relaxing FactorsCarotid Artery, CommonAneurysmPotassium Chloride15-Hydroxy-11 alpha,9 alpha-(epoxymethano)prosta-5,13-dienoic AcidBlood Vessel Prosthesis ImplantationNG-Nitroarginine Methyl EsterRegional Blood FlowRenal Artery ObstructionAortic DiseasesStentsArterial Occlusive DiseasesDogsCharybdotoxinOphthalmic ArteryConstriction, PathologicAortographyHypertensionAneurysm, DissectingThoracic ArteriesUmbilical ArteriesNitroprussideIndomethacinNitric Oxide SynthaseMiddle Cerebral ArteryEnzyme InhibitorsUltrasonography, DopplerNitric Oxide Synthase Type IIIPrazosinCalciumTemporal ArteriesVasomotor SystemVascular ResistanceBronchial ArteriesNitroargininePopliteal ArteryDesoxycorticosteroneAneurysm, FalseAortic Aneurysm, AbdominalVascular Surgical ProceduresApaminUlnar Artery