Substance PMuscle RelaxationReceptors, Neurokinin-1Muscle Relaxants, CentralMuscle, SmoothGastric FundusTachykininsVasodilationMuscle ContractionNeurokinin-1 Receptor AntagonistsTracheaGuinea PigsAcetylcholineButoxamineNeurokinin ANitric OxideCalcitonin Gene-Related PeptideVasodilator AgentsNitroarginineNitroprussideVasoactive Intestinal PeptideEndothelium, VascularDose-Response Relationship, DrugAorta, ThoracicMuscle, Smooth, VascularPyrogallolElectric StimulationMethylene BluePenisVasoconstrictor AgentsCyclic GMPPhysalaeminNorepinephrineIndomethacinMesenteric ArteriesHistamineGuanethidineBupranololRats, WistarIsoproterenolCromakalimBiological FactorsHydroxocobalaminReceptors, TachykininEledoisinCarbachol15-Hydroxy-11 alpha,9 alpha-(epoxymethano)prosta-5,13-dienoic AcidArginineVasoconstrictionBradykininReceptors, Neurokinin-2Adrenergic AgentsPulmonary ArteryNeuromuscular Nondepolarizing AgentsCapsaicinPotassium ChlorideMuscle TonusSubstance-Related DisordersAdrenergic beta-AgonistsNG-Nitroarginine Methyl EsterReceptors, Adrenergic, betaPropranololAtropineRabbitsRats, Sprague-DawleyGuanylate CyclasePancuroniumOxadiazolesTheophyllineReceptors, NeurotransmitterBronchiNeuromuscular Blocking AgentsQuinuclidinesSerotoninNitric Oxide SynthaseNeurokinin BUrethraVecuronium BromideTetrodotoxinReceptors, PurinergicPhenylephrineNitric Oxide DonorsDogsEnzyme InhibitorsAdenosineArteriesCoronary VesselsCerebral ArteriesSwineAtracuriumRats, Inbred WKYIsoindolesDinoprostAdrenergic beta-AntagonistsNeuropeptidesQuinoxalinesSuccinylcholineAortaRats, Inbred SHRReceptors, Neurokinin-3