神经冲动从大鼠脊神经节细胞周围突躯体分支到内脏分支上的传导  

Neural Impulse Conduction from the Somatic Branches of the Peripheral Processes of the Spinal Ganglion Cells to the Visceral Ones in Rats

作　　者：赵建平[1] 彭裕文[2] 刘才栋[2] 李鹏[3] 曹银祥[3] 

机构地区：[1]镇江医学院解剖学教研室,镇江212001 [2]上海医科大学解剖学教研室,上海200032 [3]上海医科大学生理学教研室,上海200032

出　　处：《针刺研究》1999年第1期40-43,共4页Acupuncture Research

基　　金：国家教委博士点基金!(No:9506195)

摘　　要：在大鼠脊神经节细胞周围突向肋间神经和胃等内脏分支投射基础上，用电刺激大鼠左侧切断神经根的Ｔ_（１０）肋间神经，记录了同侧内脏大神经上的诱发电位。结果：记录到平均传导速度为１２．４０ｍ／ｓｅｃ的复合动作电位，此结果不受呼吸肌麻痹的影响，但麻醉肋间种经或内脏大神经后不再出现。提示：神经冲动可从脊神经节细胞周围突行走在肋间神经中的躯体分支，经分叉处传导到行走于内脏大神经中的内脏分支，这些分支以 Ａ－δ纤维为主。On the basis of dichotomizing projection of the peripheral processes of the spinal ganglion cells to both the intercostal nerves and viscera(such as stomach and so on) in rats, the evoked potential was recorded from the ipsilateral greater splanchnic nerve after electrostimulating the left T_(10) intercostal nerve, the roots of which had been cut. Result: the complex action potential, the mean conduction velocity of which was 12. 40m/sec, was recorded, the result was not influenced by paralysis of respiratory muscles, but lost after anesthesia of the intercostal nerve or greater splanchnic nerve. These findings suggest that neural impulse can conduct from the somatic branches, which go through the intercostal nerve, of the peripheral process of the spinal ganglion cells to the visceral ones, which pass through the greater splanchnic nerve, these branches are mainly A-a fibers.

关 键 词：脊神经节 电刺激 神经传导 

分 类 号：R322.8[医药卫生—人体解剖和组织胚胎学] R337.3[医药卫生—基础医学]