QUICK REVISION NOTES ON PARANASAL SINUSES📌 POINTS TO PONDER🔹Air-filled bony cavities located in the face and skull adjacent to the nose.🔹Derive their nomenclature from the bones that they pneumatize.🔹Occur as “paired” structures– Frontal sinuses– Maxillary sinuses– Ethmoid sinuses– Sphenoid sinuses🔹Each sinus is connected to the nose by a small opening called an ostium.🔹The sinuses form in utero as small pockets the size of a pea. At birth they are mostly rudimentary.
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