Neuromuscular JunctionMusclesNeuromuscular Junction DiseasesMotor EndplateReceptors, CholinergicMuscle, SkeletalRana pipiensGap JunctionsMuscle ProteinsMuscle Fibers, SkeletalAgrinIntercellular JunctionsTight JunctionsSciatic NerveMotor NeuronsMuscle DenervationMuscle, SmoothNerve EndingsMuscle ContractionSynaptic TransmissionAstacoideaSynapsesPeripheral NervesNeurotransmitter AgentsMuscle DevelopmentAnuraMuscle, Smooth, VascularDiaphragmSynaptic MembranesAcetylcholinesteraseElectric StimulationPresynaptic TerminalsRana ridibundaNerve FibersSynaptic VesiclesNerve RegenerationBungarotoxinsAdherens JunctionsPhrenic NerveAcetylcholineOptic NerveCurareOculomotor MusclesAxonsMuscle Fibers, Fast-TwitchTubocurarineElectrophysiologyMuscle, StriatedCalciumMuscle FatigueMuscle Fibers, Slow-Twitch