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Frontal sinus


noun, plural: frontal sinuses

Either of a pair of paranasal sinuses situated between the inner and outer compact layers of the frontal bone, above the eyes. It communicates by the ethmoidal infundibulum with the middle meatus of the nasal cavity of the same side.


Frontal sinuses are one of the paranasal sinuses, the other being the ethmoid sinuses, maxillary sinuses, and sphenoid sinuses.

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The Fiber Disease

... in my soft palate. I swear the salt water rinse channelled from my frontal sinus into my mouth. My fear is that if this bizarre critter can do that, it can enter the ...

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by nettimo
Wed Aug 23, 2006 4:02 am
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 6267792

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