The paired air-filled cavities surrounded by the bones of the face that are lined by mucous membranes and are continuous with the nasal cavity. [ https://www.worldcat.org/search?q=bn%3A0-683-40008-8 MP : 0002240 ]
- UMLS:C0030471 (ncithesaurus:Paranasal_Sinus)
- The paired air-filled cavities surrounded by the bones of the face that are lined by mucous membranes and are continuous with the nasal cavity.
- Arise as epithelial lined diverticula of the lining of the nasal cavity. The extent of sinus development varies with species, most of the development occurs postnatally
- nasal sinus