TheRespiratorySystemI,LIJING，PhDDepartmentofAnatomyjing.liion.acSep.15.2009,Constituents:RespiratorytractLungs,GeneralDescription,Function:Gasexchange,PleuraandpluralcavityMediastinum,UpperrespiratorytractNasalpassagePharynxLarynx,Respiratorytract,LowerrespiratorytractTracheaBronchi,1.Externalnose,Nasalpassage,2.Nasalcavitynasalvestibule(鼻前庭）propernasalcavity(固有鼻腔）nasalseptum（鼻中隔）lateralwallofnasalcavity,3.ParanasalSinusesfrontalsinus（额窦）ethmoidalsinus（筛窦）sphenoidalsinus（蝶窦）maxillarysi
