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1、DigestiveSystem消化系统Composition消化系统组成Digestivetract消化管Mouth口腔Pharynx咽Esophagus食管Stomach胃Smallintestine小肠Largeintestine大肠Duodenum十二指肠Jejunum空肠Ileum回肠Digestivegland消化腺：大消化腺，小消化腺Superiordigestivetube上消化道Inferiordigestivetube下消化道Majorsalivaryglands大唾液腺Liver肝Pancreas胰Function:ingestion,diges
2、tion,absorption,egestingMouthPharynxEsophagusStomachDuodenumJejunumIleumLargeintestineLiverPancreasMajorsalivaryglandsTheEsophagus食管Generalfeatures位置及形态amusculartuberabout25cmlong,connectingthepharynxatlevelofC6vertebra,atlevelofT11vertebraentersthestomach.Division:Cervicalpart颈部Thorac
3、icpart胸部Abdominalpart腹部Threeconstrictions食管3个狭窄第一狭窄：起始部Atitsbeginning,15cmfromincisors,liesatlevelofC6,isthenarrowestpartoftheesophagus第二狭窄：与左主支气管交叉处Whereitiscrossedbyleftmainbronchus,25cmfromincisors,liesatlevelofintervertebraldiscbetweenT4andT5.第三狭窄：穿膈处Whereitpassesthroughtheesophage
4、alhiatusofdiaphragm,40cmfromincisors,atlevelofT10TheStomach胃Shape形态、分部Twosurface两壁:anterior前壁andposterior后壁.Twocurvatures两缘Lessercurvature胃小弯:short,concaveanddirectedtotherightandupward,Greatercurvature胃大弯:long,convexanddirectedtotheleftanddownward.Twoopenings两口Cardia贲门Pylorus幽门Cardiac
5、part贲门部Fundusofstomach胃底Bodyofstomach胃体Pyloricantrum幽门窦Pyloriccanal幽门管Pyloricpart幽门部Position胃的位置－Mainlypartsissituatedinthelefthypochondriacregion左季肋区,smallintheepigastricregion腹上区;TheSmallIntestine小肠About5-7mlong,DividedintoDuodenum十二指肠Jejunum空肠Ileum回肠DuodenumJejunumIleumDuodenum十二指肠F
6、ourpartsSuperiorpart上部Duodenalcap十二指肠球Superiorduodednalflexure十二指肠上曲Descendingpart降部Majorduodenalpapilla十二指肠大乳头Minorduodenalpapilla十二指肠小乳头Inferiorduodenalflexure十二指肠下曲Horizontalpart水平部Ascendingpart升部duodenojejunalflexure十二指肠空肠曲Jejunum空肠andileum回肠LargeIntestine大肠Approximately1.5mlong,Fi
7、veparts:Cecum盲肠Vermiformappendix阑尾Colon结肠Rectum直肠Canal肛管Cecum盲肠Blindsac,firstpartoflargeintestine,withlargestdiameterandthinnestwallLiesinrightiliacfossaTheiliumentersthececumobliquely,andpartiallyinvaginatesintoit,formingtheileocecalvalve－consistsoftwofolds,probablydelaysflowofileal
