superior constrictor of pharynx

例句：

1. 1.The superior constrictor of thepharynx plays a crucial role inmaintaining the balance of the upper respiratorytract.
   咽上括约肌在维持上呼吸道平衡中起着至关重要的作用。
2. 2. During sleep, the superior constrictor of thepharynx helps to keep foodparticles from entering the airway.
   睡眠时，咽上括约肌有助于防止食物颗粒进入气道。
3. 3. In somecases, damage to thesuperior constrictor of thepharynx can lead todifficulty swallowing and speech.
   在某些情况下，咽上括约肌的损伤可能导致吞咽和说话困难。