Paranasal Sinuses - Biological Function

Biological Function

The biological role of the sinuses is debated, but a number of possible functions have been proposed:

  • Decreasing the relative weight of the front of the skull, and especially the bones of the face.
  • Increasing resonance of the voice.
  • Providing a buffer against blows to the face.
  • Insulating sensitive structures like dental roots and eyes from rapid temperature fluctuations in the nasal cavity.
  • Humidifying and heating of inhaled air because of slow air turnover in this region.
  • Regulation of intranasal and serum gas pressures
  • Immunological Defense

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