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1、Thoraciccavity,pleuralcavityandlung(p.45)DepartmentofthehumananatomyattachedtotheSichuanUniversityChenDaobangThethoraciccavityItisformedbythethoracicwallanddiaphragm.Itcontainsorislodgedwiththepleura,pleuralcavity,lungs,pericardium,heart,largebloodvessels,trachea,bronchi,esophagusand
2、nerves,etal..pleuraandpleuralcavity1.Somequestions1).Pleuraisserousmembrane浆膜,linesinternalsurfaceofthoracicwall,superiorsurfaceofdiaphragm,sidessurfacesofmediastinumandcoversthelungssecretesandabsorbstheserousfluidisdividedintovisceral(pulmonary)pleuraparietalpleuracostalpleuradiaph
3、ragmaticpleuracupula(dome/cervical)ofpleuramediastinalpleura纵隔膈1.Somequestions2).Pleuralcavity:*Itisformedbythevisceralandparietalpleura.*Potentialspace潜在性*Negativepressure负压性*Onlyserousfluidinthecavity*Twospaces—leftandright3)Costaldiaphragmaticrecessbelongsthelowestpartofpleuralcav
4、ity.Intheinferiormarginofpleura,thecostalpleuraanddiaphragmaticpleuraarecontinuousandreflexedeachother.Thecostalmediastinalrecess肋膈隐窝肋纵隔隐窝LungP471.Position*Inthethoraciccavity，*Bothsidesofthemediastinum，*Coveredbypleuralbursa*Thebaseofleftlungisseparateddiaphragmfromleftlobeofthelive
5、r,spleen,andfundusofstomach.*Thebaseofrightlungisseparateddiaphragmfromtherightlobeofliver.*Theapexesoflungsareextendedtotherootofneck,about2-3cmabovethelevelofthemedialone-thirdoftheclavicle.2.FeatureThelungsaretheessentialorgansofrespiration.Healthylungalwayscontainsomeairsotheymay
6、floatinwater.ApexoflungBaseoflungCostalsurfaceMediastinalsurface(facestomadiastinum).3borders2.FeatureOnthemediastinalsurface(facestomadiastinum).*Hilumoflung—isnearthecenterofthissurface.Thebronchus,pulmonarya.andv.,nerves,bronchialvessels,lymphaticducts,etc.enterandemergethehilumof
7、lung.*Thestructuresenteringandemergingthehilusoflungarecalledtherootoflung.Theimportantstructuresintherootarearrangedtopulmonaryv.,a.andbronchus,fromanteriortopoeterior,respectivly.自上向下：右：上支、动、中下支、静自上向下：左：动、支、静2.FeatureOnthemediastinalsurface(facestomadiastinum).*suspensorylig.—forme
8、dbypleura,li
