nervous system

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  • The Nervous System
    • Central Nervous System: spinal cord and brain
    • Peripheral Nervous System: sensory and motor nerves.
    • Electrical impulses travel along a pathway of nerve cells (neurons)
    • A stimulus is detected by receptor cells inside sense organs.
      • An impulse travels up a sensory neurone to a relay neurone and then to a motor neurone. This takes the impulse to effectors such as muscles.

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