×您的电邮未被确认 现在确认Togglenavigation解剖e-Anatomyvet-Anatomy解剖忍者招募（图片与翻译）图像IMAIOSDicomViewere-MRIe-Cases类别zoo-Paedia测验QEVLAR是为放射学核心考试（RadiologyCoreExam）所准备的软件e-MRI订购资源Blog帮助中心联络我们Institutionalsubscriptionssupport语言EnglishFrançaisEspañolDeutsch中文(简体)日本語PortuguêsРусскийPolski登入我的主页安全我的订购我的订购 我的个案我的群组控制板登出×注册保持登录状态忘记密码?注册或以Google登录以Facebook登录以Apple登录气管软骨-Cartilaginestracheales解剖结构解剖结构结构高低级大体解剖>呼吸系统>气管>气管软骨翻译描述Thecartilagesofthetracheavaryfromsixteentotwentyinnumber:eachformsanimperfectring,whichoccupiestheanteriortwo-thirdsorsoofthecircumferenceofthetrachea,beingdeficientbehind,wherethetubeiscompletedbyfibroustissueandunstripedmuscularfibers.Thecartilagesareplacedhorizontallyaboveeachother,separatedbynarrowintervals.Theymeasureabout4mm.indepthand1mm.inthickness.Theiroutersurfacesareflattenedinaverticaldirection,buttheinternalareconvex,thecartilagesbeingthickerinthemiddlethanatthemargins.Twoormoreofthecartilagesoftenunite,partiallyorcompletely,andtheyaresometimesbifurcatedattheirextremities.Theyarehighlyelastic,butmaybecomecalcifiedinadvancedlife.Intherightbronchusthecartilagesvaryinnumberfromsixtoeight;intheleft,fromninetotwelve.Theyareshorterandnarrowerthanthoseofthetrachea,buthavethesameshapeandarrangement.Thepeculiartrachealcartilagesarethefirstandthelast.Thefirstcartilageisbroaderthantherest,andoftendividedatoneend;itisconnectedbythecricotrachealligamentwiththelowerborderofthecricoidcartilage,withwhich,orwiththesucceedingcartilage,itissometimesblended.Thelastcartilageisthickandbroadinthemiddle,inconsequenceofitslowerborderbeingprolongedintoatriangularhook-shapedprocess,whichcurvesdownwardandbackwardbetweenthetwobronchi.Itendsoneachsideinanimperfectring,whichenclosesthecommencementofthebronchus.Thecartilageabovethelastissomewhatbroaderthantheothersatitscenter.影像e-Anatomy图片集解剖结构下载e-Anatomy手机和平板用户可以在Appstore或GooglePlay下载e-Anatomy现在就订阅探索我們的訂閱方案订购×e-Anatomy图片集解剖结构×我们使用cookies来保证我们为您网站上的最佳体验。

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