The Respiratory System

What’s respiration?

• It’s the movement of air in and out of the body to obtain oxygen and expel carbon dioxide.

nose

trachea

bronchilung

pharynx

larynx

Which body parts are used?

alveoli

nose

trachea

bronchilung

pharynx

larynx

The respiratory processAir enters through the nose.

The air goes through the

pharynx, the larynx and

the trachea.

The air goes through the

bronchi and into the lungs.

In the lungs, the air goesinto the alveoli.

The air goes out of the

lungs.

alveoli

Inhale and exhale

• When we inhale, our lungs fill with air.• When we exhale, the air leaves the lungs.

What can you remember about the respiratory system?