摘要
应用肌电图仪测试正常人和豚鼠眼支、口支的传导速度。结果，眼支传导速度快，并发现口肌受双侧面神经支配现象。测试强度─时间曲线阈值，眼肌运动，点的阈值比口肌的低。计测豚鼠、兔的眼支和口支神经纤维直径，眼支的神经纤维直径大。扫描电镜观察眼支运动终板的次级突触间隙比口支的大。根据各自的生理学和解剖学特点，阐明了眼肌易受损伤的机理。
The conductive velocity of the efferent nerves orbicularis oculi and oris muscles of the
health humanbeings and guinea pigs is measured with EMG apparatus, The result is that the
conductive velocity oforbicularis oculi nerve is quicker and oris muscles is controlled by facial
nerves on both sides. Measuringthe threshold of S─Dcurves of the motor point of orbicularis
oculi and oris muscles shows the thresh-old of the fromer is lower. Measuring the diameter of
orbicularis oculi and oris nerve fibers on theguinea pigs and rabbits shows the diameter of
orbicular oculi nerve fiber is bigger.The area of sec-ondary synapse space of orbicularis oculi
motor end plate is larger than that of oris with ESM observa-tion. Orbicularis oculi
muscles,orbicularis oculi nerves and oris muscles, oris nerves all have their owncharacteristic
on physiology and anatomy.It elucidated the mechanism of orbicularis oculi muscles easyto
injury.
出处
《中国医科大学学报》
CAS
CSCD
1994年第5期413-415,共3页
Journal of China Medical University
关键词
面神经
解剖学
生理学
面部肌肉
facial nerve
action potential
motor point difference in vulnerability
