The vestibular apparatus.
D000818:Animals; D004423:Ear / Q000033:anatomy & histology; D006112:Gravitation; D006198:Hair Cells, Auditory / Q000502:physiology; D006801:Humans; D007223:Infant; D009038:Motion; D009949:Orientation; D012160:Retina / Q000502:physiology; D014724:Vestibular Function Tests; D014725:Vestibular Nerve / Q000502:physiology; D014722:Vestibule, Labyrinth / Q000502:physiology* / Q000648:ultrastructure