Ciliated cells are the ones that move mucus and dust particles out of the trachea.

How They Work

These specialized epithelial cells line the trachea and have hair-like structures called cilia on their surface. The cilia beat in a coordinated, wave-like motion to propel mucus upward toward the throat, clearing debris and pathogens.

This process, known as the mucociliary escalator, protects the lungs from harmful particles.

Why It Matters

  • Dust and mucus trapping : Goblet cells produce mucus that captures particles, while ciliated cells sweep it away.
  • Respiratory health : Damage to cilia (e.g., from smoking) impairs clearance, raising infection risk.
  • Everyday protection : Inhaled pollutants meet this defense daily, preventing irritation.

"Ciliated Cells: These specialized cells... help to move mucus, which traps dust particles... upwards towards the throat."

TL;DR : The missing word is ciliated. Information gathered from public forums or data available on the internet and portrayed here.