【摘要】 目的探讨软腭的下降机制。方法将腭舌肌、腭咽肌设定为软腭下降肌,用肌电图学的方法进行验证。结果在软腭下降时腭舌肌、腭咽肌都出现了肌活动电位,另外,腭舌肌、腭咽肌在讲话时也参与了构音运动。结论腭舌肌收缩使软腭下降、鼻咽腔开放,腭咽肌由于具有咽绞扼功能,不但可使软腭下降,还与咽腔闭锁密切相关。更多还原

【Abstract】 Objective To investigate the descent mechanism of the soft palate.Methods The palatopharyngus was supposed to be the descend velipalatini,and was proved by electromyogram.Results Myoactive potential of palatoglossus and palatopharyngeus was produced when soft palate was descending.Palatogossus and palatopharyngeus also took part in articulation in speech. Conclusion Palatoglossus contract can make the soft palate descent and the nasopharyngeal cavity open.Due to its function of pharyngeal entangling and griping,palatoglossus is closely associated with not only the soft palate descend but also the pharyngeal cavity closure.更多还原