BethanecholBethanechol CompoundsAcetylcholineParasympathomimeticsMuscarinic AgonistsTropicamideAgeusiaReceptors, MuscarinicAtropineReceptors, NicotinicReceptors, CholinergicParasympatholyticsMuscarinic Antagonistsalpha7 Nicotinic Acetylcholine ReceptorCholinergic AgentsPentagastrinReceptor, Muscarinic M3PirenzepineGastric AcidReceptor, Muscarinic M2CarbacholOxotremorineBungarotoxinsTorpedoMuscle ContractionMetiamideAmylasesDose-Response Relationship, DrugMuscle, SmoothVesicular Acetylcholine Transport ProteinsNicotinic Antagonists