The risorius and the buccinator muscles assist in the retraction of the lips, as well as support entrapment of air within the oral cavity.
笑肌和颊肌帮助唇的收缩，也支
了整个口腔的气体流通。
词The risorius and the buccinator muscles assist in the retraction of the lips, as well as support entrapment of air within the oral cavity.
笑肌和颊肌帮助唇的收缩，也支了整个口腔的气体流通。
Clinical data of 14 patients suffered from backleg pain caused by entrapment of thickened capillary and cordal fiber bundle inside canalis spinalis were analyzed, retrospectively.
对14例椎管内增粗毛细血管及条索状纤维素带卡压致腰腿痛的患者临床资料进行回顾性
析。
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