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Shows how the cerebellum coordinates muscle activity and how position sensors in the muscles and joints and the balancing mechanism of the inner ear function. The motions of a water-skier show the physical, interconnected structure of muscles, joints, and organs. The role of joints is explained, and a look at the interior of a human knee shows clearly how lubricating fluid is produced. Accessibility options on the DVD are: (1) audio description, (2) English subtitles, (3) English subtitles in a black box, (4) closed captions.
