《肌肉系统解剖》ppt课件

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1、MuscleTissue肌组织YingDingEmail:dingying@mail.sysu.edu.cnThecontentVCD:ThefunctionofskeletalmuscleObservation:Skeletalmuscle骨骼肌HE,NO.21specialstainshownLCTinyellowcolor荧光桃红NO.22(2)Cardiacmuscle心肌HE,NO.19specialstainshownintercalateddisc铁苏木素染色看闰盘NO.20Smoothmuscle平滑肌HE,NO.23Homework:Drawt

2、helongitudinalandcrosssectionofskeletalmusclefiberinhighpowerobjectivelens40×,anddescribeitsconstructionfeatures.作业：在高倍镜下描绘骨骼肌纤维的纵、横切面，并描述其结构特征。肌组织的分类、分布：分类分布光镜骨骼肌心肌平滑肌躯干、四肢心脏内脏、血管壁横纹肌横纹肌无横纹收缩随意肌快不持久不随意肌有节律持久不随意肌慢持久(1)Skeletalmuscle骨骼肌HENO.21Nakedeye:Thesectionoftongueispinkcolor.肉眼

3、：舌头切面，染成粉红色Lowestpowerobjectivelens4×:Themosttissueisstainedinpink.低倍镜4*：表面凹凸不平，深蓝色的为舌黏膜上皮，深面为骨骼肌，大部分染成粉红色。Lowerpowerobjectivelens10×:Moveslidetofindvarioussections(longitudinal,obliqueandcrosssection)ofskeletalmusclefibers.低倍镜10*：纵、斜、横切面Skeletalmusclefibers(lowermagnification)Crosss

4、ectionLongitudinalsectionBloodvessel(obliquesection)Lowerpowerobjectivelens10×:Thisislongitudinalsectionofskeletalmusclefibers.ComparethestainingofmuscletissuewithLCT.Whataretheirdifferences?低倍镜10*：骨骼肌的纵切面。试比较其与疏松结缔组织的不同。Skeletalmusclefibers(longitudinalsection,lowermagnification)(sk

5、eletalmusclefibers)looseconnectivetissueHighpowerobjectivelens40×:Analysesthestructureindifferentsectionsofindividualskeletalmusclefiber.Multinucleiareperipherallocationjustunderneathofthesarcolemma,whichcanbeseeninvarioussections.(thenucleusofskeletalmusclefiber)(skeletalmusclefiber

6、)askeletalmusclefiber(crosssection)myofibrils(crosssection)myofibrils(longitudinalsection)looseconnectivetissue高倍镜40*：分析不同切面的骨骼肌特征。多核，位于肌纤维的周边，紧靠肌膜内面，不同切面均可见。Highpowerobjectivelens40×:Inthelongitudinalofskeletalmusclefiberthemyofibrilsareverythinparallelwiththelengthofthecell.Andiden

7、tifyitscrossalternativelightanddarkband(crossstria)withthediaphragmcloseddown.40*镜纵切面：与长轴平行的细丝为肌原纤维。缩小光圈区分明暗相间的横纹-明暗带。(thenucleusofskeletalmusclefiber)(skeletalmusclefiber)(looseconnectivetissue)crossstriaHighpowerobjectivelens40×:Inthecrosssectionofskeletalmusclefiberthemyofibrilsar

8、estippled(do