ConstrictionRegional Blood FlowBlood Flow VelocityVasoconstrictionConstriction, PathologicFlow CytometryArteriolesDuctus ArteriosusVasoconstrictor AgentsPulsatile FlowGene FlowVasodilationReflex, PupillaryVascular ResistanceBlood PressureBronchoconstrictionCoronary CirculationCerebrovascular CirculationAmniotic Band SyndromePupilMicrocirculationPressureCerebral ArteriesMuscle TonusMuscle, Smooth, VascularRats, Sprague-DawleyArteriesCoronary VesselsPericarditis, ConstrictiveCardiomegalyPia MaterVasomotor SystemRheologyMesenteric ArteriesPhenylephrineDogsEndothelium, VascularPerfusionTime FactorsVasodilator AgentsNorepinephrineDose-Response Relationship, Drug15-Hydroxy-11 alpha,9 alpha-(epoxymethano)prosta-5,13-dienoic AcidNitric OxideHyperesthesiaSciatic NeuropathyDisease Models, AnimalLaser-Doppler FlowmetryActomyosinRats, WistarAcetylcholineIndomethacinBlood CirculationNeuralgiaPulmonary ArteryAirway ResistancePotassium ChlorideCytokinesisEnzyme InhibitorsEndothelin-1Optic FlowAortaMuscle ContractionMyographyPulmonary CirculationBronchial SpasmMyocardiumAdrenergic alpha-AgonistsRetinal ArteryStress, MechanicalOxygenEndothelinsSciatic NerveFlow Injection AnalysisRabbitsTracheaNG-Nitroarginine Methyl EsterRenal CirculationAngiotensin IIReceptors, Adrenergic, alpha-2Models, BiologicalVenulesHemodynamicsPeak Expiratory Flow RateHydrazinesMiddle Cerebral ArteryHeartBasilar ArteryMyosin Type IISerotoninVena Cava, InferiorMesenteric VeinsMethacholine ChlorideHeart RateHyperalgesiaThromboxane A2CalciumModels, CardiovascularMicrospheresNitroarginine