RS NOSE

• functions of the respiratory system
• external nose


  prominent feature
• nares (nostrils)


  opening of the nose
• choanae (funnels)


  opening of the pharynx
• nasal septum


  dividing the nasal cavity into right and left parts
• deviated nasal septum


  septum bulges to one side
• hard palate


  separates the nasal cavity from the oral cavity
• conchae


  three prominent bony ridges
• paranasal sinuses


  air-filled spaces within bone
• nasolacrimal ducts


  carry tears from the eyes
• sneeze reflex


  dislodges foreign substances from the nasal cavity
• ACHOO


  autosomal-dominant-compelling-helio-ophthalmic-outburst