# data[].attributes.body
http://cn.bing.com/images/search?view=detailV2&ccid=aFauE8%2bc&id=F6735C6F7CE61C44270F0997465E534F7C61A21A&q=breathing+system&simid=608043800017832943&selectedIndex=3

# data[].attributes.body
The oxygen in alveoli begin gas exchange in capillary networks, the red blood cell will receive these oxygen, the carbon dioxide in capillary networks will transport to alveoli, then when we exhale the carbon dioxide departure from our body.

# data[].attributes.body
When we inhale, our lungs expand and thorax value increase. The diaphragm move up, the pressure in lung decrease. So lots of air in our lungs, the alveoli become bigger.

# data[].attributes.body
When the air from nose and mouth into our body, it through the trachea, the bronchus separate air to our two parts of lungs, from main right stem bronchus and main left stem bronchus to our bronchi. In the end of our bronchi, there are many sacs they called alveoli which gas exchange occur.

# data[].attributes.body
The air from nose and mouth into our body when we inhale.

# data[].attributes.body
when a human inhalation, the air into our lungs, the diaphragm move up, it increase the volume of our the lungs and the pressure is getting small.
when a human exhalation, the air go out from our body, the diaphragm move down, it decrease the volume of our lungs and the pressure is getting big.

# data[].attributes.headline
Describe what happens  when Ventilation occurs in a human.

# data[].attributes.subject
Describe what happens  when Ventilation occurs in a human.