Muscle RigidityNeuroleptic Malignant SyndromeMasseter MuscleSuccinylcholineMalignant HyperthermiaMusclesAlfentanilFentanylMuscle ProteinsHalothaneMuscle, SmoothMuscle, SkeletalMuscle Fibers, SkeletalMuscle, Smooth, VascularMuscle ContractionMuscle DevelopmentMuscle FatigueMuscle Fibers, Fast-TwitchMuscle DenervationMuscle Fibers, Slow-TwitchMyocytes, Smooth MuscleMitochondria, MuscleNeck MusclesOculomotor MusclesMuscle Spindles