sphincter
US /ˈsfɪŋk.tɚ/
UK /ˈsfɪŋk.tɚ/
1.
括約筋
a ring of muscle surrounding and serving to guard or close an opening or tube in the body, such as the anus or the opening of the stomach into the duodenum.
:
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The esophageal sphincter prevents stomach acid from flowing back into the esophagus.
食道括約筋は胃酸が食道に逆流するのを防ぎます。
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Damage to the anal sphincter can lead to incontinence.
肛門括約筋の損傷は失禁につながる可能性があります。