胎儿颞下颌关节髁状突骨上组织的组织学特征  

Histologic Features of Supraosseous Tissue of Mandibular Condyle of Temporomandibular Joint in Human Fetus

作　　者：林艳丰 石南群 邹宁生[1] 

机构地区：[1]福建省人民医院耳鼻咽喉科,福建医学院人体解剖学教研室

出　　处：《福建医学院学报》1995年第3期226-229,共4页

摘　　要：应用传统的组织学方法对４３例１３～３８周的人类胎儿颞下颌关节髁状突骨上组织进行研究。结果显示：１３周胎龄的人类髁状突骨上组织即可分为四带，１９～２８周胎龄时Ｉ、Ⅱ带的厚度明显增加，２９～３８周胎龄时Ｉ带继续增厚并分化为新Ｉ带和新Ⅱ带。所以，２９周以后Ｉ带的分化使该组织呈现由关节带（新Ｉ带）、致密纤维带（新Ⅱ带）、增殖带、软骨母细胞带及肥大钙化带五带共存的结构。The supraosseous tissue of mandibular condyle(STMC)of 43 human fetus, ranging in age from 13 to 38 weeks,were studied with the classical histologic method.The results showed that at the age of 13 weeks,zone I was very thin,after 13 weeks,a fibrous zone was differentiated from zone I and then a 4 zones'structure(fibrous zone,proliferative zone,chondroblastic zone and hypertrophic ossification zone)was found. After 29 weeks of age.fibrous zone in turn was differentiated into two zones:articular zone and tightly packed fibrous zone,thereby.coming into a 5 zones stage.So it is reasonable to regard STMC as a structure with marked age-related changes.It is assumed that the development of STMC adapts the demanding of TMJ movement caused by mechanical function.

关 键 词：胎儿 颞下颌关节 髁状突骨上组织 组织学 

分 类 号：R329.441[医药卫生—人体解剖和组织胚胎学]