英语词汇“upper esophageal sphincter”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	upper esophageal sphincter
释义	DictionarySeesphincter upper esophageal sphincter upper esophageal sphincter A sphincter that keeps the opening between the posterior pharynx and the proximal esophagus closed, except during swallowing. It is maintained principally by the cricopharyngeal muscle. See also: sphincter See UES See UES
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