比较人体形态学教学课件：9 the immune system.pptx

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1、ThymusCortexMedullaSlideNo:21Material:humanfetusthymusMethod:H.E1.Interlobularsepta,lobule2.Theperipheryofeachlobulestaineddeeplyiscalledcortex,andthecentralzonestainedlightlyiscalledmedulla.3.Thecortexconsistsofadensepopulationofthymocytesandasmallnumbersofepithelialretic

2、ularcells.themedullaconsistsofmanyepithelialreticularcellsandlymphocytesinsmallernumbers.ThymocyteReticularcellThymiccorpusclesThemedullacontainstheredthymiccorpuscles,eachconsistingofseverallayersofflattened,concentricallyarrangedepithelialreticularcells.Theyareacharacter

3、isticfeatureofthethymus.LymphnodeCapsuleCortexLymphnodulesParacorticalzoneMedullaMedullarycordsMedullarysinusesEfferentlymphaticvesselsatthehilumTheafferentlymphaticvesselsarelocatedinthecapsule被膜下窦小梁周窦subcapsularsinusoidperitrabecularsinusoidspecificvenules-postcapillaryi

4、ntheparacorticalzoneSpleenRedpulpSplenticcordSplenticsinusoidWhitepulpLymphaticsheathcentralarterySplenicnodule脾脾小梁脾白髓脾红髓TrabeculararteryTrabecularvein未角化的复层扁平上皮隐窝淋巴小结扁桃体小肠阑尾课堂作业绘部分淋巴结结构图。复习思考题1．比较淋巴结和脾脏的结构异同点。