sphincter
US /ˈsfɪŋk.tɚ/
UK /ˈsfɪŋk.tər/
명사
괄약근
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.
예시:
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The esophageal sphincter prevents stomach acid from flowing back into the esophagus.
식도 괄약근은 위산이 식도로 역류하는 것을 막는다.
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Damage to the anal sphincter can lead to incontinence.
항문 괄약근 손상은 실금으로 이어질 수 있다.