国人基底动脉的显微解剖学观测

Anatomical determination of basilar artery in Chinese with microscope

目的 观测基底动脉的汇合部位、走行、分支及分布特点。方法 采用手术显微镜、游标卡尺在国人脑标本 (5 7例 )上观测基底动脉的形态、分支和分布。结果 基底动脉在桥延沟上方 (成人占 6 2 5 0 %± 2 11% )或下方 (儿童占 82 30 %±1 92 % )汇合而成。结论 随着年龄增长 ,基底动脉的形成有逐渐上移的趋势 ,这有一定的实际意义 ,即侧位汇合时 ,延髓上部的血液来自基底动脉 ,而高位汇合时 ,则脑干下半的血液来自两侧椎动脉。

Objective To determine the characteristics of the run and distribution and confluence of basilar artery in children and adults of Chinese.Methods The run,distribution and appearance of 57 cadavers were examined with vernier and microscope.Results The results indicated that basilar arteries joined nearby or above the sulcus of pons oblongata(62 50%±2 11% in adults,82 30%±1 92% in children).Conclusion There is a certain difference between children and adults concerning of basilar artery.As people are getting on in years,there is a tend for the formation of basilar artery going above gradually.When the basilar artery joins in lateral position,the blood in the upper part of medulla oblongata comes from basilar artery.While the basilar artery joins in a high position,the blood in the lower part of brain stem comes from both sides of vertebral artery.