摘要
目的对犬的舌骨上肌(二腹肌前腹、后腹,茎突舌骨肌,下颌舌骨肌和颏舌骨肌)与喉内肌(环杓侧肌和环杓后肌)进行同步肌电图研究。方法检测13只犬同步肌电图。结果①呼吸时环杓侧肌在呼气相放电,余各肌在吸气相放电。深呼吸时诸肌放电强度增加。②吞咽时诸肌和环杓侧肌呈同步放电。环杓后肌肌电抑制,间歇期可见肌电位发放。③发音时二腹肌前腹、后腹和环杓侧肌呈同步性密集型放电,环杓后肌在发音过程中持续放电,动作电位出现时间较迟。茎突舌骨肌和颏舌骨肌无明显肌电活动。结论①发音及吞咽时下颌舌骨肌与环杓侧肌同步且相似,可作为重建声门内收功能的备选肌肉;②吸气时颏舌骨肌与环杓后肌同步且相似,可作为重建声带外展功能的备选肌肉。
OBJECTIVE To study the synchronous electromyograhic features of suprahyoid muscles [anterior digastric muscle（AD）, posterior digastric muscle（PD）,stylohyoid muscle（STH）,mylohyoid muscle（MH）and geniohyoid muscle（GH）] and intrinsic laryngeal muscles [lateral cricoarytenoid muscle（LCA）and posterior cricoarytenoid muscle（PCA）]. METHODS Synchronous electromyograhic features of 13 dogs were observed under the circumstances of breath, swallowing and phonation. RESULTS ①AD, PD, STH, MH, GH and PCA discharged during inspiratory phase, while LCA discharged during expiratory phase. ②During swallow, suprahyoid muscles and LCA showed intensive synchronous discharge. The myoelectricity of PCA was suppressed while myopotential can be detected during intermission. ③During phonation, AD, PD, LCA and PCA showed an intensive synchronous discharge, while emergence time of PCA was later. GH and STH showed no myoelectricity activities. CONCLUSION①During phonation and swallowing, MH is synchronized with LCA. It can be chosen as the backup muscle for the reestablishment of glottic adduct function. ②During inspiratory phase, GH is synchronized with PCA. It can be chosen as the backup muscles for the reestablishment of vocal cord abduct function.
出处
《中国耳鼻咽喉头颈外科》
北大核心
2010年第7期372-375,共4页
Chinese Archives of Otolaryngology-Head and Neck Surgery
基金
广西自然科学基金资助项目(桂科自0640122
桂科自0832149)
关键词
喉肌
肌电描记术
舌骨上肌群
环杓侧肌
环杓后肌
Laryngeal Muscles
Electromyography
Suprahyoid Muscles
Intrinsic Laryngeal Muscles
Lateral Cricoarytenoid Muscle
