摘要
目的 探讨悬雍垂肌运动神经来源及走行路径。方法 以家兔为研究对象 ,应用辣根过氧化物酶 (horseridishperoxidase ,HRP)逆行追踪技术 ,配合使用颅内的脑神经根切断术。结果 悬雍垂肌的运动神经元位于同侧疑核中 ;切断一侧副神经延脑根后 ,疑核内的标记神经元消失。结论 悬雍垂肌是疑核内运动神经元的轴突 ,经副神经延脑根出颅 ,再经由迷走神经咽支进行支配。
Objective To investigate the motor nerve innervation of uvala muscle. Methods Horseridish peroxidase (HRP) retrograde tracing technique was used in conjunction with selective intracranial severing of cranial nerve rootlets in 8 rabbies. Results Following HRP injection into uvala muscles, labeled motoneurons were located in the rostral section of nucleus ambiguus. No labeled motoneurons were found in the facial nucleus. Labled motoneurons were ipslaterally abolished after the cranial rootlets of accessory nerve on one side were intracranially severed. Conclusions Uvala muscles are innervated by the motoneurons in the nucleus ambiguus. The axons of those motoneurons come out of the cranium through the cranial rootlet of the accessory nerve, then join the vagus, distributed via the pharyngeal branches of vagus.
出处
《中华口腔医学杂志》
CAS
CSCD
北大核心
2001年第3期197-198,T003,共3页
Chinese Journal of Stomatology
基金
国家自然科学基金资助项目 ( 3 9470 75 7)
