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Paranasal sinuses - Wikipedia
Paranasal sinuses are a group of four paired air-filled spaces that surround the nasal cavity. [1] ... Such limited ventilation may be protective for the sinus, as it would help prevent drying of its mucosal surface and maintain a near-sterile environment with high carbon dioxide concentrations and minimal pathogen access.
Paranasal Sinuses: Anatomy, Function & Types - Cleveland Clinic
2024年8月15日 · Ethmoid sinus: Pain in the bridge of your nose. Maxillary sinus: Pain in your cheekbones or in your upper teeth. Common tests to check the health of the paranasal sinuses. Healthcare providers can usually diagnose common causes or paranasal sinus issues with a physical exam and by considering your signs and symptoms. In some cases, your ...