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用8只犬实验并观察了环杓后肌、环杓侧肌和杓肌对环杓关节的驱动作用。环杓后肌收缩使杓状软骨外翻跨动,声带突向后、外、上方旋转,声门开大;杓斜肌除能协助声带突外展之外,还能有效地遏制声带突上旋,从而避免了声门开大过程中声带后部过分上抬。环杓侧肌收缩使杓状软骨内翻跨动,声带突向前、内、下方旋转,膜间部声门闭合;杓横肌收缩除能使两侧杓状软骨向内侧滑动相互靠拢而关闭软骨间部声门之外,尚能借助于杓状软骨内侧面阻止声带突下旋,从而使声门闭合时声带后部不致出现下移。
Eight dogs were used to test and observe the driving effects of the circumflex, circumflex cullis and ladle muscles on the cricoid joints. Ring scaphic muscle contraction so that the arytenoid cartilage eversion valgus, vocal fold to the back, outside, above the rotation, glottis open large; canine oblique muscle in addition to help support the sound outreach, but also can effectively stop the vocal cords Spin, thus avoiding the excessive glottal open vocal cords in the process of excessive lifting. Cricoid contralateral rotation of the arytenoid cartilage varus across the vocal fold to the front, the inner rotation, the lower part of the diaphragm between the glottis closed; dipper transverse muscle contraction in addition to bilateral arytenoid cartilage sliding closer to each other and close Cartilage outside the glottis, but also with the help of the medial aryar cartilage to prevent the pronation process of pronation, so that when the glottis closed the back of the vocal cords will not appear down.