论文部分内容阅读
本文选用 98例新鲜胚胎 ( 6 40周 )标本的左冠脉前降枝 ,石蜡切片 ,HE及van Gieson Orcein染色法和透射电镜技术对冠状动脉组织发生作光镜及电镜水平观察。结果显示 :胎龄 6周时血管尚呈血窦状 ;2 3月的管壁有一层内皮细胞和2 4层平滑肌 ;4月的管壁结构典型 ,细胞已具有一定的生理功能 ;7月的管壁较厚 ,细胞具有良好生理功能。内弹性膜随胎龄增厚、增长、弯曲 ,有一系列形态变化。自胎龄 4月起内膜有局部增厚现象
In this study, 98 cases of fresh embryo (6 40 weeks) specimens of the left anterior descending branches, paraffin sections, HE and van Gieson Orcein staining and transmission electron microscopy of coronary arteries were observed by light microscopy and electron microscopy. The results showed that the blood vessels were still sinusoid at 6 weeks of gestation; the endothelial cells and 24 smooth muscle layers were found on the wall in February; the wall structure in April was typical; the cells had certain physiological functions; Thick wall, the cells have good physiological function. Inner elastic membrane with gestational age thickened, growth, bending, a series of morphological changes. Since April from the gestational age intima have local thickening phenomenon