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Title:

Sensory System

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Sensory System Senses Sight Occipital lobe of brain Light enter eye forms upside down image on Retina Retina transforms light into nerve signals Brain turns image ... – PowerPoint PPT presentation

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Title: Sensory System


1
Sensory System
  • Senses

2
Sight
  • Occipital lobe of brain
  • Light enter eye forms upside down image on Retina
  • Retina transforms light into nerve signals
  • Brain turns image right side up and tell what we
    are seeing

3
(No Transcript)
4
Hearing
  • Temporal lobe of brain
  • Sound waves enter ears causing eardrum to vibrate
  • Vibrations transferred to hammer, anvil and
    stirrup in middle ear
  • Turned into nerve signals
  • Cortex processes signals and tells us what we hear

5
(No Transcript)
6
Taste
  • Parietal lobe of brain
  • Taste buds (sensory cells) react to chemicals in
    foods
  • Identify sweet, sour, salty and bitter
  • Messages sent from taste buds to areas of brain
    responsible for processing taste

7
(No Transcript)
8
Smell
  • Parietal lobe of brain
  • Olfactory cells in the mucous membranes lining
    the nostrils react to chemicals
  • Messages are sent along specific nerves to the
    brain
  • Brain distinguishes between smells

9
(No Transcript)
10
Touch
  • Parietal lobe of the brain
  • Skin contains over 4 million sensory receptors
  • Receptors gather information and sent it to the
    brain fro processing and reaction

11
(No Transcript)
12
Cranial Nerves
  • 12 pairs
  • Bring information from the sense organs to the
    brain
  • Control muscles
  • Connect to glands and other organs
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