Nervous system

• The nervous system controls all bodily functions by sending messages through nerves and neurons.
• What are receptors?


  Proteins or cells that detect and respond to specific signals or stimuli.
• What are effectors?


  Effectors carry out a specific response or action in response to a stimuli
• What is a reflex arc?


  A neural pathway that controls a reflex action.
• Reflex arc:

  1. stimuli
  2. receptors
  3. sensory neurones
  4. Central nervous system (CNS)
  5. motor neurones
  6. Effectors