【摘要】 我们用光学显微镜和电子显微镜对３３例胎儿和２４例成人不同部位的骨膜进行了观察和比较，发现：（１）骨膜外层含有较多的胶原细胞，骨膜内层含有较多的细胞器的发达的成骨细胞。（２）髂骨骨膜外层血管多，口径大，血循环丰富，内层厚，细胞较多，细胞分化及功能活跃。（３）胎儿较成人骨膜结构疏松，含细胞多，尤以功能活跃的大核细胞数增高更明显。因此认为：骨膜内层具有成骨能力；髂骨骨膜成骨潜力较强；胎儿较成人骨膜成骨活跃。更多还原

【Abstract】 Abstract Periosteum specimens were obtained in differ-ent parts of 38 fetus and 29 adults and after properprocessing and staining,were observed by lightand electron microscopes.The findings were asfollows:1.More collagen fibers were seen in theexternal layer;2.Iarge calibre blood vessels werefound in the external layer of the iliac periosteum,the inner layer of which was thicker.Many cellswithactive cellular differentiation were seen in theinner layer;3.the periosteum of the fetus waslooser in structre that of the adult and it con-tained more cells especially the large nuclear cellswith active funtion.The authors concluded that,the fetus periosteum had a greater potential of os-sification than that of the adult,and this potentialmight be stronger in the inner layer of iliac perios-teum.更多还原