bursa of piriform muscle

例句：

1. 1. The bursa of the vocal cords is responsible for filtering airborne particles from the lungs.
   声带的腺体负责过滤肺部空气中的颗粒。
2. 2. The bursa of the larynx protects the vocal cords and helps to regulate their movement.
   喉部腺体保护声带并帮助调节其运动。
3. 3. During an infection, the bursa can become inflamed and swollen, leading to difficulty breathing.
   感染期间，腺体可能发炎肿胀，导致呼吸困难。