ArteriolesPia MaterVasodilationVenulesRetinal ArteryVasoconstrictionMicrocirculationAdrenergic FibersNerve FibersSympathetic Nervous SystemDenervationAxonsVasodilator AgentsRats, Sprague-DawleyAcetylcholineNorepinephrineParasympathetic Nervous SystemMuscle, Smooth, VascularNitric OxideCheekVasomotor SystemCerebral ArteriesMusclesMuscle, SkeletalMotor NeuronsEndothelium, VascularElectric StimulationJuxtaglomerular ApparatusNeurons, AfferentMicroscopy, VideoMuscle DenervationUbiquitin ThiolesteraseVasoconstrictor AgentsNitroarginineTyrosine 3-MonooxygenaseCholinergic FibersArteriesImmunohistochemistryCalcitonin Gene-Related PeptideVasoactive Intestinal PeptideRegional Blood FlowRats, WistarNitric Oxide SynthaseNitroprussideNeuronsCapillariesNG-Nitroarginine Methyl EsterSubstance PMuscle TonusHistocytochemistryAutonomic Fibers, PreganglionicNeuromuscular JunctionVascular ResistanceMesoporphyrinsCoronary VesselsNeuropeptide YAnimals, NewbornNerve EndingsBlood PressureGuanethidineVesicular Acetylcholine Transport ProteinsSympathetic Fibers, PostganglionicRenal CirculationAutonomic PathwaysSweat GlandsEnzyme InhibitorsMuscle ContractionMesocricetusSwine, MiniatureAcetylcholinesteraseCatsCholine O-AcetyltransferaseVagus NerveNerve Regeneration3-IodobenzylguanidineDose-Response Relationship, DrugRats, Inbred StrainsSynapsesTrigeminal NerveHindlimbHydronephrosisAdenosineRetinal VesselsOphthalmic NerveNeurons, EfferentGanglionectomyNitric Oxide Synthase Type IIIRats, Inbred WKYKidney GlomerulusThiolester HydrolasesGanglia, SympatheticSerotoninSwineGanglia, ParasympatheticMesenteryHeartIndomethacinNervous System Physiological PhenomenaRats, Inbred SHRDopamine beta-Hydroxylase