sphincter
sphincter 英 ['sfɪŋktə] 美 ['sfɪŋktɚ]
n. [解剖] 括约肌
名词复数:sphincters
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- n. [解剖] 括约肌
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1. Some people are born with a naturally weak sphincter (LES).
一些人先天（下食管）括约肌的功能较弱。
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2. At the lower end of the esophagus is a small ring of muscle called the lower esophageal sphincter (LES).
在食管的末端有一个较小的环形肌肉叫做下食管括约肌（LES）。
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3. Urinary incontinence in spina bifida patients might be related to detrusor hyperreflexia, to sphincter areflexia, or to both conditions.
脊柱裂患者尿失禁可能与逼尿肌反射亢进、或括约肌反射消失两者都有关。
- sphincter (n.) 1570s, from Middle French sphincter, from Late Latin sphincter "contractile muscle," from Greek sphinkter "band, lace, anything that binds tight," from sphingein "to squeeze, bind," of unknown origin. First used in anatomical sense by Galen. There are several in the body; the one usually meant is the sphincter ani.
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