NOSE (NASUS)

• Nose (nasus) - consists of external nose and the nasal cavity
• External nose - the visible structure that forms a prominent feature of the face
• Nasal cavity - the open chamber inside the nose where air enters the respiratory system
• Nares (nostrils) - external openings of the nasal cavity
• Choanae - the openings into the pharynx
• Hard palate - the anterior portion of the roof of mouth; separates the oral cavity from the nasal cavity
• Nasal septum - divides the nasal cavity into longitudinal sections
• Conchae - bony ridges on each side of the nasal cavity helping air churn through the nasal cavity
• Meatus - the tunnels beneath concha

  
  

  Superior and middle meatuses - openings from the various paranasal sinuses

  Inferior meatus -opening of a nasolacrimal duct