Mesenteric ArteriesMesenteric Artery, SuperiorIschemiaMesenteric Artery, InferiorArteriesMyocardial IschemiaBrain IschemiaMesenteric Vascular OcclusionCeliac ArterySuperior Mesenteric Artery SyndromePulmonary ArteryRenal ArteryCerebral ArteriesFemoral ArteryReperfusion InjuryVasodilationCarotid ArteriesMuscle, Smooth, VascularVasoconstrictionSplanchnic CirculationBasilar ArteryVasodilator AgentsRats, WistarBiological FactorsMesenteric VeinsVasoconstrictor AgentsIliac ArteryRats, Sprague-DawleyEndothelium, VascularSplenic ArteryCoronary Artery BypassNorepinephrineVertebral ArteryHepatic ArteryTime FactorsPhenylephrineRadial ArteryMyographyCoronary VesselsMammary ArteriesBlood PressureAcetylcholineCarotid Artery, InternalSubclavian ArteryNitric OxideAngiographyIschemic Attack, TransientMyocardial Reperfusion InjuryDose-Response Relationship, DrugRats, Inbred WKYCarotid Artery DiseasesArterial Occlusive DiseasesDisease Models, AnimalDuodenostomyMuscle ContractionDogsRegional Blood FlowBrachial ArteryMuscle RelaxationTomography, X-Ray ComputedInfarction, Middle Cerebral ArteryReperfusionCarotid Artery, CommonRats, Inbred SHRRabbitsEndothelium-Dependent Relaxing FactorsMiddle Cerebral ArteryAneurysmWarm IschemiaNG-Nitroarginine Methyl EsterHemodynamicsRenal Artery ObstructionCoronary DiseaseEnzyme InhibitorsPotassium ChlorideOphthalmic ArteryConstriction, Pathologic15-Hydroxy-11 alpha,9 alpha-(epoxymethano)prosta-5,13-dienoic AcidPopliteal ArteryCharybdotoxinIschemic PreconditioningStentsNitric Oxide SynthaseCoronary CirculationMyocardiumCoronary AngiographyCalciumCerebrovascular CirculationUmbilical ArteriesVascular Surgical ProceduresThoracic ArteriesIndomethacinTemporal ArteriesUltrasonography, DopplerNitroprussideHypertensionUlnar ArteryAorta, ThoracicLigationBlood Vessel Prosthesis Implantation