Muscle SpindlesMotor Neurons, GammaCatsSnakesNeurons, AfferentMuscle Fibers, SkeletalMusclesMotor NeuronsMuscle Fibers, Slow-TwitchMuscle ContractionMuscle, SkeletalMyosin Heavy ChainsEarly Growth Response Protein 3SuccinylcholineElectric StimulationAction PotentialsNerve FibersGallamine TriethiodideMyofibrilsMotion Pictures as TopicNerve EndingsAxonsReflex, StretchNeural ConductionDietary FiberHindlimbMineral FibersGlycogenMuscle Fibers, Fast-TwitchCotton FiberNeuromuscular JunctionSatellite Cells, Skeletal MuscleMicroscopy, ElectronElectrophysiologyChickensStress FibersPurkinje FibersNerve Fibers, Myelinated