Monday, 10 December 2012

Sense of Smell

  • Our nose is the sensory organ that enables us to smell.

Structure of Nose

  • The sensory cells which respond to the stimulus of smell are located in the roof of the nasal cavity.
  • These receptors are covered with the mucus, which dissolves airborne chemicals.
  • When chemicals dissolve in the mucus, the sensory cells will send a message (nerve impulses) to the brain for identifying the kind of smell detected. 

Reason of Running Nose

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