首页 | 本学科首页   官方微博 | 高级检索  
     


A complex muscle fiber network in the cricothyroid muscle: a scanning electron microscopic study
Authors:Hyodo Masamitsu  Taguchi Aki  Yamagata Takahiko  Desaki Junzo
Affiliation:Department of Otolaryngology, Ehime University School of Medicine, Toon City, Ehime, Japan. hyodoma@m.ehime-u.ac.jp
Abstract:
OBJECTIVES: To examine the three-dimensional ultrastructure of cricothyroid (CT) muscle fibers to elucidate their morphologic characteristics with regard to the specific functions of the muscle. STUDY DESIGN: An anatomic animal study. METHODS: The CT muscles of five adult rats were processed using the HCl-hydrolysis method to remove the peri- and intramuscular connective tissue components. The fine muscle fiber arrangements were observed by scanning electron microscopy. RESULTS: Complex muscle fiber interconnections (myomyous junctions) were identified in the muscles. Myomyous junctions were characterized by the connection of many villous processes that were 1 to 2 mum in diameter and 2 to 4 mum in length with a serrated appearance at the ends of a lateral branch or a bifurcating trunk of the muscle fibers. CONCLUSIONS: Myomyous junctions form a complex muscle fiber network, which is thought to synchronize the activity of the CT muscle fibers. This is the first three-dimensional demonstration of the muscle fiber network in the CT muscle; this network may play a major role in the functional specificity of the CT muscle.
Keywords:Cricothyroid muscle  myomyous junction  muscle fiber network  scanning electron microscopy
本文献已被 PubMed 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号