摘要
用９周～３９周引产胎儿标本７２例，取右耳廓石蜡切片，ＨＥ和Ｗｅｉｇｅｒｔ弹性纤维染色，光镜观察其弹性软骨、弹性纤维、耳廓肌和结缔组织的发生。结果表明：弹性软骨，９周为密集的间充质细胞群，１２周见分化的软骨细胞，１３周软骨膜形成，中央区的细胞间出现弹性纤维，１８周纤维数量增多并相互交叉，３６周出现同源细胞群。弹性纤维，１３周在软骨中央，２２周在小动脉管壁上，２８周在结缔组织中，３９周在真皮内可见，３６周在软骨膜内外和结缔组织中相互衔接。耳廓肌，９周为短小的成肌细胞，１１２周胞质内见核朊粒，１４周见横纹，１９周横纹明显，２０周细胞核多位于肌膜下。结缔组织，９周为胚性结缔组织，其中毛细血管和神经纤维较少，１６周见脂肪细胞。
We selected 72 induced fetus of 9-39 weeds,Paraffinsection of the right auriclewere done,with HE and Weigert staining. The tissue development of the elastic cartilage , elastic fiber,muscular tissue and connective tissue of the right auricle were observed with light microscope,The re-sults showed that the elastic cartilage was composed of dense connective tissue cells in the ninth week,differentiating cartilage cells appeared in the twelfth week,cartilage membrane formed and elastic fibersappeared in th thirtieth week,elastic fibers increased and grewn between cartilage cells in the eightiethweek,isogenous group appeared in the thirty-siath week.The elastic fibers of centre of elastic carti-lage appeared in the thirtieth week, which located in the wall of small artery in the twenty-second,and the twenty-eighth week in connective tissue. However,dermis appeared on the thirtieth,and theelastic fibers of connective tissue. The muscle of the auricle developed cytopasmic granules in thetwelfth week,protoplasm of muscle developed cytopasmic granulcs in the twelfth week,Cross striationin the fourteenth week was also observed,and more clear in the nineteenth week.Nucleus of musclemoved under muscular membrane,The connective tissue was embryonal tissue containing a little capil-lary and nerve fiber in the ninth week.Fat cells appeared in the sixteenth week.
出处
《泰山医学院学报》
1995年第3期184-188,共5页
Journal of Taishan Medical College
关键词
胎儿
耳廓
组织发生
fetus
auricle
tissue development
