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  • To communicate between receptors and effectors the body uses two main methods.
    • Nerves
    • Hormones
    • The Nervous system
      • Synapse
        • Each neurone does not directly end on another neurone. There is a small gap between the two neurones called a synapse.
          • In order for an impulse to be generated in the next neurone, a chemical transmitter is released. This then diffuses across the small gap.
            • Many drugs interfer with synapse. They may block or copy the acton of neurotransmitter in certain neurones.

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