1. Frontal sinusSinuses are mucosa-lined airspaces within the bones of the face and skull. The frontal sinuses are situated behind the superciliary arches.
Read “Frontal sinus” on English Wikipedia
Read “前頭洞” on Japanese Wikipedia
Read “Frontal sinus” on DBpedia
Read “Frontal sinus” on English Wikipedia
Read “前頭洞” on Japanese Wikipedia
Read “Frontal sinus” on DBpedia
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