摘要
用健康成年家兔9只,分三组进行实验。第一组用电吸引器吸去小脑左侧半球大部分及齿状核的一部分;第二组电解损毁小脑左侧半球皮质小部分及其深部的髓质;第三组电解损毁左侧齿状核小部分。喂养3~7日后作冰冻脑干连续横切片,Fink-Heimer法染色,光镜下追踪观察溃变纤维及终末溃变。结果是:两侧动眼神经核、滑车神经核和展神经核内均有溃变纤维及终末溃变。动眼神经核中的溃变以对侧的明显且多,滑车神经核和展神经核中的则以同侧的较多。这些纤维均发自齿状核。最后讨论了此系由齿状核到支配眼外肌神经核的纤维投射的机能意义。
Nine adult healthy rabbits were used in this study.In these animals attemptswere made to produce lesions in different parts of the cerebellar hemispheres.Largelesions of the left cerebellar hemisphere were produced by an aspiration technique.Small lesions of the cerebellar cortex or of the dentate nucleus were produced bystereotaxic electrolysis.All animals were sacrificed 3~7 days after the operation.The brains were cut at 25~30μin serial transverse sections on freezing microtome.The sections were stained with Fink-Heimer method.The degenerating fibers and terminals are found in the bilateral nuclei ofⅢ,ⅣandⅥcranial nerves The degenerations are predominant in the contralateraloculomotor nucleus but less in the ipsilateral side.On the contrary,it is slightlydominant in the ipsilateral trochlear and abducens nuclei,but less in the contrala-teral ones.It is shown that these fibers arise from the dentate nucleus.The functional significance of this fibers system is discussed.
作者
唐竹吾
张书琴
张奎启
Tang Zhuwu;Zhang Shuqin;Zhang Kuiqi(Department of Anatomy,Zunyi Medical College)
出处
《解剖学报》
CAS
1983年第2期176-179,233,共5页
Acta Anatomica Sinica
