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ID:58491913
大小:1.58 MB
页数:11页
时间:2020-09-21
《基础医学英语课件:The digestive system and how it woks.pptx》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、ThedigestivesystemandhowitwoksEsophagus食道Generalfeatures-amusculartuberabout25cmlong,connectingthepharynxatlevelofC6vertebra,passesthroughthediaphragmatlevelofT10vertebraandafter1~2cmentersthestomachDivisionCervicalpartThoracicpartAbdominalpart返回Stomach胃LocationMainlypartsiss
2、ituatedinthelefthypochondrialregionSmallintheepigastricregionThecardiaissituatedtotheleftofT11,thepylorusliestotherightofL1JuicesproducedgastricacidFunctionsdigestsprotein返回Smallinstestine小肠About5~7mlongDivision:Duodenum十二指肠Jejunum空肠Ileum回肠返回Colon结肠Ascendingcolon升结肠(15cm)righ
3、tcolicflexure结肠右曲Transversecolon横结肠(50cm)leftcolicflexure结肠左曲Descendingcolon降结肠(25cm)descendsalmostverticallyfromleftcolicflexuretosigmoidcolonatleftiliaccrest.Sigmoidcolon乙状结肠(40cm)-extendsfromdescendingcolontorectumatlevelofS3.返回Rectum直肠Position:withinpelviccavity,extendsfr
4、omS3topelvicdiaphragm.CurvesSagittalplaneSacralflexure直肠骶曲:convexbackwardPerinealflexure直肠会阴曲:convexforwardCoronalplaneUpperandlowerpart-convextotheright.Middlepart-convextotheleft.Lowerpartofrectumdilated,tofromampullaofrectum直肠壶腹Threetransversefoldsofrectum直肠横襞返回Liver肝Shape
5、——twosurfacesDiaphragmaticsurface膈面--ConvexandsmoothVisceralsurface脏面--HasaH-shapedfissuresandgroovesJuicesproducedbileFunctionsdissolvethefatintothewaterycontentsoftheintestine返回Pancreas胰ShapeandPositionAsoftyellowishlobulatedglandLiesbehindtheperitoneumontheposteriorabdomin
6、alwall,roughlyatthelevelofL1~L2JuicesproducedpancreaticjuiceFunctionsbreakdownthecarbohydrate,fatandproteinCTscanofpancreas.
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