Objective: To study the influence of amputating cricopharyngeal muscle and unilateral pharyngealconstrictor after total laryngectomy on vocal restoration.
目的：探讨全喉切除发音重建中切断环咽肌与一侧咽缩肌对发音的影响。
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The superior pharyngealconstrictor assists in gaining velopharyngeal closure, while peristaltic movement of food is facilitated by the middle and inferior pharyngeal constrictors.