3.- The Respiratory System - Process Of The System

Process Of The System:

1. The air enters through the nose and we going through the nasal cavity.

2. The air pass through the pharynx.

3. The air travels down the trachea until it reaches the bronchial tubes.

4. In the bronchial tubes are divided into the lungs.

5. In the lungs, the bronchi were to become alveoli.

6. The oxygen will be transferred into the blood.

7. The air containing carbon dioxide will be driven by the action of the diaphragm.

Webgraphy:

http://www.webmd.com/lung/how-we-breathe

http://kidshealth.org/es/parents/lungs-esp.html?WT.ac=pairedLink