影像解剖-Infracolic compartment课件

Glissen’systemHepaticveinoussystemInfracolic

compartmentItisbetweenthetransversecolonanditsmesocolonandsuperiorpelvicaperture小骨盆上口Itcontainsthejejunum,ileum,cecum,vermiformappendix,colon…Jejunumandileum

(mesenterysmallintestine)(P.106)Thesmallintestineisoftenstatedtode6-7mlongandincludesduodenum,jejunumandileum.Theuppertwo-fifthpartsofmesenterysmallintestinearecalledjejunum;lowerthree-fifthpartsareileum

Jejunum

ileumLocationupperleftabdominalcavity

lowerrightParietalthick-degreethicker

thinnercolorpink

lightpinkMucosafoldshigher,anddenserlower,andrarerArterialsupplyingbetterandlittlearterial-arches

poorandmucharterial-arches

(1-2ranksofarterial-arches)(3-4ranksofarterial-arches)LymphtissuesolitaryL.follicles

solitaryandaggregatedL.follicles

孤立L滤泡集合L滤泡Cecum(P.109)TobecontinuouswithascendingcolonToconnectwithterminalpartofileumandvermiformappendixAnintraperitoneumorganIleocecalvalveIleocecalopeningOpeningofvermiformTobeintherightiliacfossa回盲瓣Vermiformappendix(P109)IntraperitonumorganTohavemesoappendix,Base(root)ofappendixisattachedtothececumwhere3teniaecoliconcentrateonApexisblind.5-7cmlong结肠带Surfaceanatomyoftherootofappendix—McburneypointItisatthejunctionofthelateralandmiddlethirdsofthelinejoiningtherightanteriorsuperioriliacspineandtheumbilicus.麦氏点/马压点Theappendixisveryvariableinposition,frequentlyitliesatthefollowingposition:PelvicpositionRetrocecalpositionPre-ilealpositionSubcecalposition……Colon(P111)Division:AscendingTransversecolonDescendingSigmoidcolonFeaturesofthecolonandcecum:

teniaecoli结肠带

haustracoli结肠袋

epiploicappendices肠脂垂LeftiliaccrestS3vert.RightflexureSuperiormesentericartery(P.106)*Fromabdominalaorta,atthelevelofL1*Posteriortoheadofpancreas*Intherootofmesentery*MainbranchesJejunala.andileala.Ileocolica.

apppendiculara.,

ilealbr.,

cecalbr.(Ascendinding)colicbr.Rightcolica.Middlecolica.Straighta.直动脉Inferiormesentericartery*FromabdominalaortaatlevelofL3*Mainbranchesleftcolica.Sigmoida.superiorrectala.Themarginarteryontheinnerborderofthecolonileocolica,rightcolica.,middlecolica.,leftcolica.,andsigmoida.shorterbr.andlongerbr.Hepaticportalvein(P.124)

Theportalveinisformedbythesuperiormesentericv.andsplenicv..Itcollectsthebloodfromtheunpairedorgansintheabdominalcavityexcept

liver.Theportalveincarriesthebloodtotheliverfordetoxifyingandresolvingthematerialsabsorbedbythegastricintestine.FeaturesofthePortalvein

*Novenousvalves

*Beginningfromandendingtothecapillarybloodvessels

*Collectingbloodfromtheunpairedorgansintheabdominalcavityexceptliver

*Havinganastomosisbetweentheportalvenoussystemandthesystemicvenoussystem

*Richnutrientsinthebloodoftheportalvein1)Maintributariesoftheportalv.Leftgastricv.drainsintoportalv.Rightgastricv.drainsintoportalv.Superiormesentericv.

→portalv.Inferiormesentericv.

→splenicv.v..Paraumbilicalv.

→portalv.Splenicv.

→portalv.Cysticv.

→portalv.2).Portalvenoussystemcommunicationwiththesystemicvenoussystem(1)Esophagealvenousplexusesophagealvein→azygosvein↑esophagealvenousplexus↓leftgastricvein→portalveinTheportalveinishighpressure←↑↑enlarged,thinner,varix曲张Liverdetoxifymasterialabsorbedbygastricointestine

(2)Umbilicalvenousplexussuperiorepigatricv.

thoracoepigastricv.↑↑umbilicalvenousplexus→paraumbilicalv.→portalv.↓↓inferiorepigastricv.

superficialepigastricv.→greatersaphenousvexternailiacvinferiorrectalv.→internaliliacv.→commoniliacv→IVC↑rectalvenousplexu