Functional importance of maxillary sinus is______________?

Correct answer: D. All of the above

  • A. Lightening of skull weight and production of bactericidal lysozyme to the nasal cavity
  • B. Protects the brain against exposure to cold air by arresting air in sinus temporarily
  • C. Resonance of voice and enhancement of faciocranial resistance to mechanical shock
  • D. All of the above

Explanation

The maxillary sinus contributes to reduction of skull weight, voice resonance and facial shock absorption; its respiratory lining also contributes protective secretions such as lysozyme. Therefore, all the listed functions are included in the conventional description.

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