The nervous system

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  • How the nervous system coordinates responses
    • the central nervous system consists of the brain and the spinal cords
      • it allows us to make sense of our surroundings in order to survive
    • 1. receptor cells convert a stimulus (e.g bright light) into an electrical impulse
      • 2. This electrical impulse travels alongside cells called sensory neutrons to the central nervous system
        • 3. Here, the information is processed and the appropriate response is coordinated, resulting in an electrical impulse being sent along motor neurones to effectors
          • 4. The effectors carry out the response (e.g muscles contracting or glands secreting hormones)


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