Receptors, MuscarinicMuscarinic AgonistsMuscarinic AntagonistsReceptor, Muscarinic M3Receptor, Muscarinic M1Receptor, Muscarinic M4CarbacholPurinergic P1 Receptor AgonistsSerotonin Receptor AgonistsDopamine AgonistsN-MethylscopolamineSerotonin 5-HT1 Receptor AgonistsSerotonin 5-HT2 Receptor AgonistsParasympathomimeticsCholinergic AgonistsAdenosine A1 Receptor AgonistsAtropineParasympatholyticsDose-Response Relationship, DrugMuscarineAcetylcholineGABA AgonistsAdenosine A2 Receptor AgonistsRats, Sprague-DawleyGABA-A Receptor AgonistsGABA-B Receptor AgonistsCannabinoid Receptor AgonistsSerotonin 5-HT4 Receptor AgonistsPiperidinesDiaminesPurinergic P2 Receptor AgonistsScopolamine HydrobromideAdrenergic alpha-2 Receptor AgonistsBethanecholGallamine TriethiodideGuinea PigsRadioligand AssayReceptors, Opioid, kappaAdenosine A3 Receptor AgonistsCholinergic AgentsAdenosineHistamine AgonistsScopolamine DerivativesNicotinic AgonistsRats, WistarReceptors, Opioid, muMuscle, SmoothSerotonin AntagonistsReceptors, Dopamine D2Adrenergic AgonistsCalciumQuinuclidinesPhenethylamines2,3,4,5-Tetrahydro-7,8-dihydroxy-1-phenyl-1H-3-benzazepineBaclofenReceptors, Purinergic P1Adrenergic beta-3 Receptor AgonistsPilocarpineQuinpiroleReceptors, Opioid, deltaAdrenergic beta-AgonistsCHO CellsExcitatory Amino Acid AgonistsReceptors, Dopamine D1GTP-Binding ProteinsMuscle ContractionPyrrolidinesAdrenergic alpha-AgonistsBenzazepinesEnkephalin, Ala(2)-MePhe(4)-Gly(5)-Cyclic AMPPropylbenzilylcholine MustardNaphthalenesNeuronsAdrenergic alpha-1 Receptor Agonists8-Hydroxy-2-(di-n-propylamino)tetralinCells, CulturedDrug InteractionsReceptors, SerotoninGuanosine 5'-O-(3-Thiotriphosphate)ArecolineCricetinaeElectric StimulationReceptors, OpioidReceptor, Adenosine A2ABinding, CompetitiveCannabinoidsBenzilatesMuscimolSignal TransductionIleumParasympathetic Nervous SystemSerotoninReceptors, CholinergicThiadiazolesIsoproterenolDopamine AntagonistsAdenosine-5'-(N-ethylcarboxamide)LigandsMethacholine Compounds