mucus
The mucous/slime traps dirt, and then you cough it up
inside your lungs there are some cells called cillia they are little hairs that sway side to side hat remove dust and dirt from your lungs. when you smoke you are killing those cells thus all the dirt stays in your lungs making it hard for you to breath
they eat
Sand is inside the 'Jar Of Dirt'.
A ciliated epithelial cell is adapted to remove dirt from people's lungs.
the problems they have are that the dirt that is in the lungs does not brushed out by the cilia, causing the lungs to be filled with black dirt, making it harder to breathe.
Hairs in the Trachea that keep out dirt from the lungs.
Dirt and contaminants from the inspired air.
cilia
to clear away mucus and dirt
well the dog gets in the dirt and than when it comes in it tracks the dirt inside
Yes. Sand and dirt have very sharp edges....like little razors. Just living in a desert climate can be harmful to your lungs.