声带松弛肌为A．环杓侧肌B．环杓后肌C．环甲肌D．甲杓肌E．杓肌

作者: rantiku 人气: - 评论: 0

问题声带松弛肌为

选项 A．环杓侧肌 B．环杓后肌 C．环甲肌 D．甲杓肌 E．杓肌

答案 D

解析：甲杓肌起于甲状软骨中央部背侧的前连合，内侧部止于杓状软骨声带突，外侧部止于杓状软骨肌突。收缩时使声带松弛，同时兼有声带内收、关闭声门的作用。

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