What is the sticky liquid

in your respiratory system?

What is the job

of the hairs in your nose?

to filter out and trap

dust and dirt particles

in the cells

of your nose

and trachea (windpipe)

1) to stop dust, dirt, and bacteria from reaching the lungs

2) to keep tissues moist

cilia push mucus

toward the

back of the throat

to get rid of irritating and harmful particles in the nose

What happens to the air

before it reaches the lungs?

nose

(so the air can be filtered and moistened

before it reaches the lungs)