Monday, 10 December 2012

Sense of Touch

  • Our skin is sensory organ that can detect stimuli such as pain, pressure, touch, heat and cold.
Structure of the Human Skin

  • Our skin consists of two main layers: Epidermis (outer layer) and Dermis (inner layer)
  • There are 5 types of receptors in our skin. Can you identify them in the figure above?
  • Each type of receptor is sensitive to a different stimulus.
  • The skin at different body parts is not equally sensitive to stimuli. The skin of some body parts is more sensitive than that of other body part.
  • Such difference is due to the different thickness of the epidermis and different numbers of receptors in the skin.

Watch the following video: Skin sensitivity

After watching the video, can you identify which parts of our body part have great sensitivity and less sensitivity? 

How sensitive are you? Try out this simple experiment.

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