摘要
本文用人的脊髓,经10%福尔马林固定后,取腰3~4节作50μm及75μm两种厚度的矢状冰冻切片。在解剖显微镜下看到Rolando胶状质为一半透明纵带,其背、腹界线明确。胶状质背方有一白质与胶状团块混杂的海绵带。用刀片沿海绵带背缘及腔状质的腹、背缘作纵切,使各层呈台阶状,然后将切片进行尼氏染色,分析各层的细胞构筑。作者发现人脊髓的Rolando胶状质,主要相当于Rexed的Ⅱ,Ⅲ两层,但其浅表的海绵带(Rexed第Ⅰ层)实质上仍应属胶状质,是杂有大量纤维的、敌在的胶状质。已往文献中有关Rolando胶状质和Rexed板层间相应关系的论述,在逻辑上有可质疑之处。作者认为,在同一切片上,在胶状质和海绵带的界限、范围部带有明确标志的前提下,所观察到的它们和Rexed层次之间的相应关系,其结论更为合理、可靠。
Usually Rexed’s laminaⅡof the spinal cord is taken as the substantia gelatinosa Rolandi.This,however,is not based on unequivocal evidence.We have proved in goat(’81)that the substantia gelatinosa Rolandi actually corresponds to laminaeⅠ,ⅡandⅢ.The investigation was extended to the human being in the present study.Lumbarspinal segments were cut parasagittally in 3 cases(an adult,a child and a new-born baby).Sections were first examined under a stereomicroscope.The substantia gelatinosa Rolandi could be clearly identified as a semitransparent gelatinous layer.Dorsal to it was a spongy layer with islands of gelatinous material scattered in white matter.The dorsal border of the spongy layer,the boundary between it and the ventral lying gelatinous layer and the ventral border of the latter were marked by razor cuts.The sections were then stained with Nissl method and the cytoarchitecture of the tissue between the cuts was studied.It has been found that the substantia gelatinosa Rolandi of the human being corresponds principally to Rexed’s laminaeⅡandⅢ.The overlying spongy layer(laminaⅠ)however,composing of scattered,broken gelatinous substance,should also be considered a part of the substanstia gelatinosa.
作者
关国梁
鞠躬
Guan Guoliang;Ju Gong(Department of Anatomy,The Fourth Militnry Medical College,Xian)
出处
《解剖学报》
CAS
1984年第2期174-178,共5页
Acta Anatomica Sinica
