Saturday, January 31, 2009

THE NOSE & IT'S COMMON DISORDER

The Nose is a special sense organ for smell and respiration. This smell is supplied by the olfactory nerve. The olfactory nerve fibres originate from the special olfactory cell on the roof of nose. The olfactory nerves carry impulses of the smell to the olfactory area of the temporal lobes of the brain where sensation and impulses are interpreted and give smell.

Common Functions:
  • Air is cooled down and is made moist
  • The odor of the inspired air can be easily taken
  • The dust particles and bacteria are caught up and removed


Common disease of the Nose

Rhinitis: It is an inflammation of the mucous membranes of the nose with symptoms of sneezing, itching, nasal discharge and congestion. It can be allergic, non-allergic, or both.

Seasonal allergic rhinitis: It is caused by substances that trigger allergies, called allergens.

Perennial allergic rhinitis: It is an IgE-mediated reaction to allergens that show little or now seasonal variation. It is persistent, chronic and generally less severe than seasonal allergic rhinitis.

Ref: PMD,OSL,Bangladesh

No comments: