Neurones

• Sensory neurones:

  Convert information from receptors to relay neurones

  
• Motor neurones:

  Transmit nerve impulses from relay neurones to effectors (muscles or glands)

  
• Relay neurones:

  Transmit impulses between neurones

  
• Endocrine system:

  • Slow
  • Effects are widespread and long lasting
  • Transmission by blood
• Nervous system

  • Fast
  • Localised and short-lived effects
  • Transmission by neurones