You simply cough.
It traps bacteria and dust.
dust
Trapping dust and for coughing
shijuhew
The trachea is lined with ciliated columnar epithelium, which has hundreds of tiny hairs called cilia.
The trachea is lined with ciliated columnar epithelium, which has hundreds of tiny hairs called cilia.
A nice, big sneeze.
mucus!!!!!!mucus trap the dirt in the trachea!
No - the hairs inside the nose filter out dust - it's essentially what 'bogies' are made of !
Sneezing is a reflex action caused by irritation in the nasal cavity. By sneezing you reduce the chance of ingesting dust particles and potentially dangerous microorganisms that have been breathed in. Because of this sneezing could be classed in the respiratory category.
The goblet cells have this function.
yooo