sense organs + CNS

• what is a sense organ?

  a group of receptor cells that respond to specific stimuli
• the 5 senses?

  smell, taste, sight, touch & hearing
• the 5 sense organs?

  nose, tongue, eyes, skin, ears
• smell -> nose -> ? (the stimuli)

  chemicals in the air
• taste -> tongue -> ? (the stimuli)

  chemicals in food
• sight -> eyes -> ? (the stimuli)

  light
• touch -> skin -> ? (stimuli)

  temperature & pressure
• hearing -> ear -> ? (the stimuli)

  sound waves
• what makes up the central nervous system?


  the brain and spinal cord
• brain + spinal cord = CNS
• Some parts of the nervous system are specialised for...?

  detecting stimuli
• what parts of the nervous system are specialised for detecting stimuli?


  sense organs -> have receptor cells in them
• information is sent along the neurones in the form of...?


  electrical impulses