paranasal sinuses

the air-filled spaces, lined with mucous membrane, within some of the bones of the skull. They open into the nasal cavity, via the meatuses, and are named according to the bone in which they are situated. They comprise the frontal sinuses and the maxillary sinuses (one pair of each), the ethmoid sinuses (consisting of many spaces inside the ethmoid bone), and the two sphenoid sinuses.

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sinus paranasales [TA] the mucosa-lined air cavities in the cranial bones that communicate with the nasal cavity, including the ethmoidal, frontal, maxillary, and sphenoid sinuses.

Sinus paranasales (paranasal sinuses).


Medical dictionary. 2011.

Look at other dictionaries:

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  • paranasal sinuses — the air filled spaces, lined with mucous membrane, within some of the bones of the skull. They open into the nasal cavity, via the meatuses, and are named according to the bone in which they are situated. They comprise the frontal sinuses and the …   The new mediacal dictionary

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  • paranasal sinus — One of many small hollow spaces in the bones around the nose. Paranasal sinuses are named after the bones that contain them: frontal (the lower forehead), maxillary (cheekbones), ethmoid (beside the upper nose), and sphenoid (behind the nose).… …   English dictionary of cancer terms

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  • paranasal sinus and nasal cavity cancer — Cancer that forms in tissues of the paranasal sinuses (small hollow spaces in the bones around the nose) or nasal cavity (the inside of the nose). The most common type of paranasal sinus and nasal cavity cancer is squamous cell carcinoma (cancer… …   English dictionary of cancer terms

  • paranasal sinus — n any of various sinuses (as the maxillary sinus and frontal sinus) in the bones of the face and head that are lined with mucous membrane derived from and continuous with the lining of the nasal cavity …   Medical dictionary

  • paranasal sinus — noun any of the paired sinuses in the bones of the face adjacent to the nasal cavity that are lined with mucous membrane that is continuous with the lining of the nasal cavities • Syn: ↑sinus paranasales, ↑nasal sinus • Hypernyms: ↑sinus * * *… …   Useful english dictionary

  • paranasal sinus — noun A number of air filled spaces, or sinuses, within the bones of the skull and face. Syn: sinus paranasales …   Wiktionary

  • Sinus paranasal — Pour les articles homonymes, voir Sinus. Sinus paranasal Sinus paranasaux …   Wikipédia en Français

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