食管上括约肌的矢状面断层解剖及其意义  

Sagittal sectional anatomy of upper esophageal sphincter and its significance

作　　者：涂丽莉[1] 徐胜春[1] 张铭[1] 朱有余[1] 

机构地区：[1]安徽医科大学人体解剖学教研室,合肥230032

出　　处：《解剖学杂志》2009年第6期812-814,共3页Chinese Journal of Anatomy

基　　金：安徽省自然科学基金（070413258X）

摘　　要：目的：了解食管上括约肌矢状面的形态学特点，并试图阐明其功能产生的机制。方法：选取9例成人食管上括约肌标本进行火棉胶包埋，制作薄层矢状面断层切片，切片进行V-G染色，观察矢状面上食管上括约肌的肌束和肌层纤维结缔组织的形态学特点。结果：食管上括约肌不同区域均有环行肌存在，在后壁相互重叠；食管上括约肌不同区域结缔组织的形态有所不同，在整个食管上括约肌肌层内有树根形的结缔组织束贯穿全程。结论：食管上括约肌的肌组织和纤维结缔组织可能共同参与高压区的形成。Objective： To study the morphological characteristics of muscle fiber and connective tissue of upper esophageal sphincter （UES） in sagittal section and to investigate the function of UES. Methods： Nine adult pharyngoesophagus specimens were embedded with celloidin and then sectioned sagittally. After treated with van-Gieson staining, the morphological characteristics of muscle fibers and connective tissues of USE in serial sections were investigated. Results： The ring-shaped muscle fibers were throughoutly found in USE, and interlapped within the posterior wall of USE. The appearance of connective tissues was different from thyropharyngeal muscle to cricopharyngeus muscle and to upper esophagus. A root-shaped connective tissue bundles ran through entire muscle layer of USE. Conclusion： Both of muscle fibers and connective tissues of UES may participate in the form of high pressure region.

关 键 词：食管上括约肌 火棉胶 断层解剖 环咽肌 

分 类 号：R571.04[医药卫生—消化系统] R445.2[医药卫生—内科学]