Locations of the paranasal sinuses
The paranasal sinuses are four airspaces around the nasal cavity.
This is a diagram of the locations of the four paranasal sinuses. They are named according to the bones within which the sinuses lie: surrounding the nasal cavity (maxillary sinuses), above the eyes (frontal sinuses), between the eyes (ethmoid sinuses), and behind the ethmoid bone (sphenoid sinuses).
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"Illu nose nasal cavities."
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