上矢状窦窦腔内纤维索分布的解剖学特征  

Anatomic characteristics of the chordae willisii distribution in the superior sagittal sinus

作　　者：王娜[1] 邓雪飞[1] 陈丹[1] 王世栋[1] 韩卉[1] 

机构地区：[1]安徽医科大学人体解剖学教研室,合肥230032

出　　处：《解剖学杂志》2011年第3期370-373,共4页Chinese Journal of Anatomy

基　　金：国家自然科学基金（30771137）;安徽省学术与技术带头人科研基金;安徽医科大学博士科研资助基金（XJ200911）

摘　　要：目的：观察上矢状窦不同节段窦腔内纤维索的分布特征，探讨其功能和意义。方法：成人头颅湿性标本，15例沿上矢状窦上壁长轴中线纵行剖开，5例沿垂直眦耳线的冠状面作连续断层切片。将上矢状窦分为有桥静脉注入的前段、缺乏桥静脉注入的前缺乏段、有桥静脉注入的后段和上矢状窦后部的后缺乏段，观察纤维索结构在上矢状窦各段窦腔内的分布情况及形态。结果：上矢状窦窦腔内纤维索总数目为277个，其中瓣膜状纤维索131个，覆盖53％逆行注入上矢状窦的桥静脉注入口，74％的瓣膜状纤维索分布在上矢状窦注入后段，22％分布在注入前段；小梁状纤维索85个，58％分布在上矢状窦注入后段，20％分布在注入前段；板层状纤维索61个，64％分布在上矢状窦注入后段，33％分布在后缺乏段接近窦汇处。断层解剖能准确区分3种纤维索结构。结论：上矢状窦窦腔内纤维索具有节段性分布的特征，可能与上矢状窦血栓形成的发生有关。To observe the distribution of chordae willisii in different segments of the superior sagittal sinus （SSS）, and understand the function and clinical significance of the chordae willisii. Methods： 15 adult human cadaveric heads were observed by splitting superior walls of the SSS along the long axis, and 5 specimens were studied by cutting continual coronal section. The SSS was divided into four segments from anterior to posterior： segments 1 and 3 were parts of sinus receiving a cluster of cerebral bridging veins, whereas segments 2 and 4 were nontributary segments receiving few veins. The number, location and distribution of all kinds of chordae willisii in different segments of the SSS were recorded. Results： 277 chordae willisiis were found in total. There were 131 valvelike chordae which covered 53% of the dural entrance of cerebral bridging veins against into the SSS, 74% of valvelike chordae were located in the segment 3 and 22% in the segment 1; There were 85 trabecular ones, 58% of whick were located in the segment 3 and 20% in the segment 1; There were 61 lamellar ones, 64% of which were located in the segment 3 and 33% in the segment 4. These three different types of chordae willisiis could be distinguished clearly by sectional anatomy. Conclusion： The chordae willisii in SSS has the specific feature of segmental distribution, possibly affecting the pathogenesis of SSS thrombosis.

关 键 词：上矢状窦 纤维索 大脑桥静脉 显微解剖 断层解剖 

分 类 号：R743.32[医药卫生—神经病学与精神病学]