Ch 16 Respiratory System Review

Front

What are the two main substances exchanged in the respiratory system?

Back

Carbon dioxide and oxygen.

Front

Where does the exchange of oxygen and carbon dioxide occur in the lungs?

Back

In the alveoli.

Front

How does air move into the lungs?

Back

Passively from an area of high pressure towards lower pressure.

Front

What happens to the lungs when the diaphragm relaxes?

Back

The lungs shrink, pushing air out.

Front

What is the technical term for breathing air out?

Back

Expiration.

Front

What is the technical term for breathing air in?

Back

Inhalation.

Front

What is the role of the diaphragm in respiration?

Back

It contracts to allow air to enter the lungs and relaxes to push air out.

Front

What is the function of alveoli in the respiratory system?

Back

They facilitate the exchange of oxygen and carbon dioxide between the air and blood.

Front

What is the process of gas exchange in the lungs called?

Back

External respiration.

Front

What is the primary muscle involved in breathing?

Back

The diaphragm.