Evolving views on the internal operation and functional role of the muscle spindle.
D000818:Animals; D001369:Axons / Q000502:physiology; D049672:History, 19th Century; D049673:History, 20th Century; D009046:Motor Neurons / Q000502:physiology; D009470:Muscle Spindles / Q000502:physiology*; D009132:Muscles / Q000294:innervation; D009475:Neurons, Afferent / Q000502:physiology; D009476:Neurons, Efferent / Q000502:physiology; D009482:Neurophysiology / Q000266:history