额窦 蝶窦 Sinus frontalis Sinus sphenoidalis 垂体窝 上鼻甲 Fossa hypophysial Concha nasalis supe 鼻道 Meatus nasi superIor Os nasale 蝶朋孔 Foramen sphenopalatinum Concha nasalis media 中鼻道 Meatus nasi medius 下鼻甲 Concha nasalis inferior (翼突)外侧板 Lamina lateralis (processus ptery goiden) (翼突)内侧板 牙管 Lamina medialis( processus pterygoideI) nalis incisivuS 下鼻道 Meatus nasi inferior 示鼻甲及鼻道 Showing the nasal conchae and meatuses