内括约肌 meaning in English

internal sphincter

M . sphincter ani internus
肛门内括约肌
Clinical study on treatment of typhoid with san - ren decoction and ofloxacin
侧位内括约肌切断扩肛缝合术治疗陈旧性肛裂疗效观察
External hemorrhoids form beyond the intersphincteric groove to produce an " acute pile " at the anal verge
外痔形成超过内括约肌，在肛门边缘产生一个“急性隆起” 。
The prostate constitutes the near urethra wall and urethral sphincter surrounding the urethra , the detrusor contracts and then the sphincter relaxes
前列腺构成近端的尿道壁和围绕前列腺尿道部的尿道内括约肌，当排尿逼尿肌收缩时，内括约肌即放松。