Mesenteric ArteriesMesenteric Artery, SuperiorArteriesMesenteric Artery, InferiorPulmonary ArteryRenal ArteryCarotid ArteriesCerebral ArteriesFemoral ArteryCeliac ArteryBasilar ArteryMesenteric Vascular OcclusionSuperior Mesenteric Artery SyndromeIliac ArteryVertebral ArteryCoronary Artery BypassVasodilationMuscle, Smooth, VascularVasoconstrictionSplenic ArteryRadial ArteryMammary ArteriesCarotid Artery, InternalHepatic ArterySubclavian ArteryCarotid Artery DiseasesSplanchnic CirculationVasodilator AgentsVasoconstrictor AgentsBrachial ArteryEndothelium, VascularCoronary VesselsBiological FactorsCarotid Artery, CommonMesenteric VeinsOphthalmic ArteryNorepinephrineRenal Artery ObstructionAngiographyUmbilical ArteriesMiddle Cerebral ArteryTomography, X-Ray ComputedThoracic ArteriesAcetylcholinePhenylephrineMyographyTemporal ArteriesRats, WistarBronchial ArteriesBlood PressurePopliteal ArteryTreatment OutcomeArterial Occlusive DiseasesUlnar ArteryAneurysmRats, Sprague-DawleyTime FactorsNitric OxideUterine ArteryMuscle RelaxationMuscle ContractionDose-Response Relationship, DrugCoronary AngiographyRats, Inbred WKYStentsRegional Blood FlowCarotid Artery, ExternalDuodenostomyCarotid Artery InjuriesDogsConstriction, PathologicUltrasonography, DopplerCoronary Disease15-Hydroxy-11 alpha,9 alpha-(epoxymethano)prosta-5,13-dienoic AcidPotassium ChlorideRats, Inbred SHRVena Cava, SuperiorRabbitsInfarction, Middle Cerebral ArteryAxillary ArterySuperior ColliculiNG-Nitroarginine Methyl EsterRetinal Artery OcclusionEndothelium-Dependent Relaxing FactorsAortaAorta, ThoracicCharybdotoxinMagnetic Resonance AngiographyCarotid Artery ThrombosisHemodynamicsAngioplasty, BalloonEmbolization, TherapeuticMeningeal ArteriesVascular PatencyNitroprussideVasomotor SystemBlood Vessel Prosthesis ImplantationHypertensionFollow-Up StudiesNitric Oxide Synthase