Experimental study of motor nerve innervation of uvala muscle
10.3760/j.issn:1002-0098.2001.03.011
- VernacularTitle:悬雍垂肌运动神经支配的实验研究
- Author:
Weijian ZHONG
1
;
Hongqing WANG
;
Kuiqi ZHANG
Author Information
1. Dalian Medical University
- From:
Chinese Journal of Stomatology
2001;36(3):197-198
- CountryChina
- Language:Chinese
-
Abstract:
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.
