The facial sinus cavities are moist, hollow spaces in the bones around your eyes, cheeks, and nose. They are connected to the nasal passages through narrow openings. They protect your airways by trapping irritants that you inhale.
| By | Healthwise Staff |
| Primary Medical Reviewer | Kathleen Romito, MD - Family Medicine |
| Specialist Medical Reviewer | Donald R. Mintz, MD - Otolaryngology |
| Last Revised | November 9, 2009 |
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