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1. 
Wich is the two movements of the Pulmonary ventilation?
A.
Pulmonary ventilation and Gas exchange.
B.
Inspiration and Expiration.
C.
Gas exchange and Expiration.
D.
Pulmonary ventilation and Inspiration.
2. 
In the gas exchange .What we have in the lungs?
A.
Oxygen.
B.
Carbon Dioxide.
C.
Mucus.
D.
Alveoli.
3. 
Air enters the body through the ......
A.
Nasal Cavity.
B.
Larynx.
C.
Diaphragm.
D.
Nostrils.
4. 
The air travels down through the .... , the windpipe, the .... and the bronchioles, and finally reaches the ....
A.
Larynx, Alveoli , Lungs.
B.
Larynx, Bronchi , Lungs.
C.
Blood Capillaries , Alveoli , Bronchioles.
D.
Larynx , Windpipe , Blood Capillaries.
5. 
Gas exchange takes place in the .....
A.
Nostrils.
B.
Lungs .
C.
Nasal Cavity.
D.
Alveoli.