The respiratory system allows us to breathe in oxygen and breathe out carbon dioxide. It consists of the nose, windpipe, bronchi, and lungs. The nose warms and cleans the air before it travels down the windpipe and bronchi into the lungs. In the lungs, oxygen passes from the air into the blood while carbon dioxide passes from the blood into the air to be exhaled.

1. natural
Teacher: Merche

2. How does our respiratory system work?
It helps us breathe in oxygen and breathe out
carbon dioxide.
The oxygen enters and the carbon dioxide leaves.

3. RESPIRATORY SYSTEM
a) Nose: The nose has two holes called nostrils.
b)Windpipe: is a tube that divides into two smaller tubes called bronchi.
c)Lungs: are two sacks that are protected by our ribs.
It’s made up of the nostrils, the windpipe, the bronchi and
the lungs.

4. RESPIRATORYSYSTEM
PROCESS:
1)The air enters our nose (the nose warms the air and the hairs clean it).
1)The air goes down the windpipe and the bronchi into the two lungs.

5. Windpipe
Bronchi
Lungs

6. RESPIRATORYSYSTEM
PROCESS:
3) In the lungs, the oxygen passes from the air
into the blood
4) The carbon dioxide passes from the blood
into the air.
5) The carbon dioxide leave our body when
we breathe out.
Carbon dioxide
Oxygen

7. IMPORTANT VERBS YOU HAVE TO
REMEMBER..
Enters = goes into = goes in = breathe in Entrar
Goes out = leaves = breathe out Salir
Clean = limpiar
Warm = calentar
…(oxygen)… passes from…(the air)… into …..(the blood)..