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homeostasis and response - Coggle Diagram

- - - - Effectors include muscles and glands, and so responses can include muscles and contractions or hormone release
  - - - they are adapted to carry electrical impulses is called a nerve
      - a bundle of neurons is called a nerve
      - there are 3 main types of neurons : sensory, motor and relay.
        
        A long fibre ( axon) which is insulated by a fatty (myelin) sheath
        
        they are long so they can carry messages up and down the body
        
        tiny branches ( dendrons) which brand further as dendrites at each end.
        
        these receive incoming impulses from other neurones