title: HUMAN SPATIAL ORIENTATION AND ITS CRITICAL ROLE IN SPACE TRAVEL.
mesh_terms: D002924:Ciliary Body; D006801:Humans; D009949:Orientation; D010827:Physiology; D011311:Pressoreceptors; D012160:Retina; D011984:Sensory Receptor Cells; D013026:Space Flight; D013028:Space Perception; D014722:Vestibule, Labyrinth
keywords: CILIARY BODY; ORIENTATION; PHYSIOLOGY; PRESSORECEPTORS; RECEPTORS, NEURAL; RETINA; SPACE FLIGHT; VESTIBULAR APPARATUS