JACOPIN / BSIP / SCIENCE PHOTO LIBRARY JACOPIN / BSIP / SCIENCE PHOTO LIBRARY
Illustration of various stages to explain how the brain commands a ball to be caught. Eyes send information on what they see to the brain via the sensory nerves. The brain's response is sent via the network of sensory nerve fibres (motor nerves) to the muscles in the arms which will then catch the ball.
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