甲咽肌的应用解剖及临床意义

目的:了解甲咽肌的形态特点,探讨甲咽肌的功能及临床相关疾病的机制。方法:通过对63例成人尸体标本甲咽肌处进行观察与测量,并进行火棉胶包埋制作薄层断层切片,观察连续切片上甲咽肌的变化。结果:甲咽肌在咽后壁的厚度由上而下逐渐减小;肌层可分为3层,内层的肌纤维不参与咽缝的构成,并与环咽肌的环形肌相续。结论:甲咽肌下端是一个解剖的薄弱环节;甲咽肌内层的肌纤维可能参与高压区的形成。

Applied anatomy of thyropharyngeal muscle and its clinical significance

Objective: To study the architecture of thyropharyngeal muscles,so as to investigate the function of thyropharyngeal muscle and the mechanism of the diseases in relation to the thyropharyngeal muscle.Methods: The morphology of thyropharyngeal muscle in 63 normal adult cadavers was observed.Nine pharyngoesophagus regions were prepared as sets of serial sections to study the change of thyropharyngeal muscle.Results: The thickness of thyropharyngeal muscle in pharynx posterior wall was reduced.There were 3 layers in the muscular layer of thyropharyngeal muscle,and intimal of thyropharyngeal muscle was not part of the raphe of pharynx.The intimal of thyropharyngeal muscle was connected with ring-shaped muscle of cricopharyngeus.Conclusion: There was weak element in inferior extremity of thyropharyngeal muscle.The intimal of thyropharyngeal muscle may participate in forming high pressure regions.