摘要
目的:调查脑干表面纤维束的外形特点,补充脑干的解剖学资料。方法:在解剖显微镜下对脑干进行解剖观察。结果:5 种未见报道的纤维束的出现率如下:大脑脚底表面纤维整体向腹内侧下旋,左侧24.0%,右侧28.0%,双侧28.0%;大脑脚底表面部分纤维成弓形向下凸,仅左侧2.7%;脑桥表面部分脑桥小脑纤维向外下绕三叉神经根下方行入桥臂。左侧10.7%,右侧6. 7%,双侧5.3%;脑桥表面部分脑桥小脑纤维向外上绕三叉神经根上方行人桥臂,左侧1.3%,右侧2.7%;移位的锥体束纤维跨过或覆盖橄榄表面,左侧9.3%,右侧21.3%,双侧9.3%。还有国内未见报道的脚底丘索内侧束、横脚束、桥带、脑桥斜束和前外侧弓状纤维等。结论:本文丰富了国人脑干表面纤维束的类型,为人类学和医学研究提供了脑干表面纤维束的解剖学资料。
To investigate the superficial fasciculi of brain stem, providing anatomic data of brain stern. Methods： Totally 75 brain stems were observed and dissected with anatomic microscope. Results： Five kinds of unnamed fasciculi which had not been reported in literature were found. Pes-pronator fibers： The anterior surface of basis pedunculi was twisted medially. It was found 24.0% on the left, 28. 0% on the right, and 28.0% on both sides simultaneously. Pes-arcuate fibers： There was some arcuate fibers which protruded caudally on the surface of basis pedunculi. It was found 2. 7% on the left and none on right. Caudally removed pontocerebellar fibers： A bundle of pontocerebellar fibers passed laterally and caudally below the root of the trigeminal nerve. It was found 10. 7% on the left, 6.7% on the right, and 5.3% on both sides. Rostrally removed pontocerebellar fibers： A bundle of pontocerebellar fibers passed laterally and rostrally above the root of the trigeminal nerve. It was found 1.3% on the left, 2. 7% on the right, and none on both sides. Pyramidal across-olivary fasciculus： A part of pyramidal tract came across or covered the anterior surface of the olive. It was found 9. 3% on the left, 21.3% on the right, and 8. 0% on both sides. Another 5 kinds which had not been reported in Chinese literature were also found. Medial pes-lemniscus bundle was found 80. 0% on the left, and 70. 7% on the right, 65.3% on both sides. Transverse peduncular tract was found 33. 3% on the left, 22. 7% on the right, and 4.0% on both sides. Taenia pontis was found 72. 0% on the left, 62. 7% on the right, and 60. 0% on both sides. Fasciculus obliquus pontis was found 93. 3% on the left, 90. 7% on the right, and 4.0% on both sides. Ventral external arcuate fibers was found 100. 0% on both sides. Conclusion： This paper provides anatomic data and enrichs types of the superficial fasciculi of brain stem, which is useful for the studies of anthropology and medicine.
出处
《解剖学杂志》
CAS
CSCD
北大核心
2005年第4期458-459,472,i0002,共4页
Chinese Journal of Anatomy
