Mesenteric ArteriesMesenteric Artery, SuperiorMesenteric Artery, InferiorArteriesElectric StimulationMesenteric Vascular OcclusionCeliac ArterySuperior Mesenteric Artery SyndromePulmonary ArteryRenal ArteryMuscle, Smooth, VascularVasodilationCerebral ArteriesVasoconstrictionCarotid ArteriesFemoral ArterySplanchnic CirculationBasilar ArteryMesenteric VeinsBiological FactorsVasoconstrictor AgentsNorepinephrineVasodilator AgentsEndothelium, VascularSplenic ArteryRats, WistarIliac ArteryRats, Sprague-DawleyMuscle ContractionAcetylcholinePhenylephrineElectric Stimulation TherapyTime FactorsDose-Response Relationship, DrugVertebral ArteryCoronary Artery BypassHepatic ArteryStimulation, ChemicalMyographyRadial ArteryMammary ArteriesMuscle RelaxationNitric OxideCarotid Artery, InternalBlood PressureDuodenostomyRats, Inbred WKYSubclavian ArteryCalciumPhysical StimulationCoronary VesselsTomography, X-Ray ComputedAngiographyDeep Brain StimulationCarotid Artery DiseasesSuperior ColliculiDogsRabbitsBrachial ArteryTreatment OutcomeVena Cava, SuperiorEndothelium-Dependent Relaxing FactorsEnzyme InhibitorsCarotid Artery, CommonPotassium ChlorideRegional Blood FlowRats, Inbred SHRCells, CulturedTranscranial Magnetic StimulationMembrane PotentialsAneurysmNG-Nitroarginine Methyl Ester15-Hydroxy-11 alpha,9 alpha-(epoxymethano)prosta-5,13-dienoic AcidSympathetic Nervous SystemRenal Artery ObstructionCharybdotoxinOphthalmic ArteryIndomethacinArterial Occlusive DiseasesNitric Oxide SynthaseAortaPrazosinConstriction, PathologicMiddle Cerebral ArteryStentsUmbilical ArteriesNitroprussideVasomotor SystemThoracic ArteriesUltrasonography, DopplerHypertensionAorta, ThoracicTemporal ArteriesVascular ResistanceAdrenergic alpha-AntagonistsNitroarginineApaminGuinea PigsPotassiumBronchial Arteries