[ˈsfiŋktə]
［拉］括约肌：环状肌纤维带，其功能为压缩一通道或关闭一自然开口
习惯用语sphincter ani
肛门括约肌：见musculus sphinceter ani externus和musculus sphincter ani internussphincter of Boyden
Boyden括约肌，胆总管括约肌：环绕胆总管靠近十二指肠处cardiac sphincter , cardioesophageal sphincter
贲门括约肌：食管入胃口周围的肌纤维cornual sphincter
输卵管括约肌：同tubal sphinctersphincter of eye
眼轮匝肌：同musculus orbicularis oculigastroesophageal sphincter
胃食管括约肌：食管末端几厘米增厚的部分，其功能为防止胃内物回流到食管Giordano's sphincter
Giordano括约肌：同musculus sphincter ductus choledochiHenle's sphincter
Henle括约肌：环绕尿道前列腺部的肌纤维hepatic sphincter
肝静脉括约肌：肝静脉靠近进入下腔静脉处的肌层增厚部分sphincter of hepatopancreatic ampulla
肝胰管壶腹括约肌Hyrtl's sphincter
Hyrtl括约肌：一种不完全的肌纤维带或肌纤维增厚，位于肛门上方几英之直肠内inguinal sphincter
腹股沟管括约肌：精索周围的一个肌纤维环，位于腹股沟管内口sphincter iridis
瞳孔括约肌：同musculus sphincter pupillaeLütkens' sphincter
Lütkens括约肌：胆囊颈部的肌纤维增厚Nélaton's sphincter
Nelaton括约肌：一种偶有而常为不完全的肌纤维带，位于直肠周围平前列腺处O'Beirne's sphincter
OBeirne括约肌：乙状结肠和直肠接合处大肠壁内的环状肌纤维sphincter oculi
眼轮匝肌：同musculus orbicularis oculiOddi's sphincter
Oddi括约肌，胆道口括约肌：在其横过十二指肠壁时包绕相连的胆管和胰管的环状肌纤维鞘sphincter oris
口轮匝肌：同musculus orbicularis orispalatopharyngeal sphincter
腭咽括约肌：咽后壁的肌纤维横带，来自咽上缩肌或咽腭肌，吞咽时收缩形成Passavant隆起；裂腭者说话时也会收缩pharyngoesophageal sphincter
食管咽括约肌：咽和食管结合部的肌弹性较高区，参与吞咽运动precapillary sphincter
前毛细血管括约肌：一种环绕真毛细血管的平滑肌纤维，起源于动脉毛细管，可以开启或关闭毛细管的入口prepyloric sphincter
幽门前括约肌：胃壁内靠近幽门括约肌的一种肌纤维带sphincter pupillae
瞳孔括约肌：同musculus sphincter pupillaepyloric sphincter
幽门括约肌：围绕胃进入十二指肠的开口处，胃中层环行肌的增厚rectal sphincter
直肠括约肌，同Hyrtls sphinctertubal sphincter
输卵管括约肌：输卵管与子宫接合处之环状肌纤维带sphincter urethrae
尿道括约肌：同musculus sphincter urethraesphincter vaginae
阴道括约肌：女性球海绵体肌sphincter vesicae
膀胱括约肌：同musculus sphincter vesicae urinariae