# data[].attributes.body
http://cn.bing.com/images/search?view=detailV2&ccid=1qO%2bspbC&id=44F18845A9F97D7B95441307D4D6F68513FB058C&q=lungs&simid=608001747988514384&selectedIndex=6&qft=+filterui%3aphoto-animatedgif&ajaxhist=0

http://cn.bing.com/images/search?view=detailV2&ccid=NFZBz2qh&id=3B6D3B0633F9C901734FEEB318A8A909E1DD49F8&q=lungs+ventilation&simid=608044628948157083&selectedIndex=7&ajaxhist=0

http://cn.bing.com/images/search?view=detailV2&ccid=SRT5jrLV&id=4F0A8A78DCB687D954C168F75EA60530E9D4D4F1&q=lungs&simid=608010668627070360&selectedIndex=98&qft=+filterui%3aphoto-animatedgif&ajaxhist=0

http://cn.bing.com/images/search?view=detailV2&ccid=NFZBz2qh&id=3B6D3B0633F9C901734FEEB318A8A909E1DD49F8&q=lungs+ventilation&simid=608044628948157083&selectedIndex=7&ajaxhist=0

# data[].attributes.body
People in a state of panic might hyperventilate, or breathe much faster than normal, in an effort to introduce more oxygen to the blood in an emergency. This biological reflex is one of the few that can be consciously controlled. Anyone hyperventilating can calm themselves down by forcing more measured breathing.

# data[].attributes.body
Breathing is controlled by the expansion and contraction of the diaphragm. This dome-shaped muscle is located below the lungs, and it compresses and expands the lungs to make the body perform the subconscious reflex of breathing. The diaphragm does this about 12 to 20 times every minute, changing according to what an individual is doing.

# data[].attributes.body
The human respiratory system consists of a tube leading from the nose and mouth down to two lungs. The lungs have millions of specialized cells called alveoli. These cells filter oxygen from the rest of the gas breathed in for providing directly to the blood. This is possible because of the tiny blood vessels called capillaries that surround the alveoli.

# data[].attributes.body
1. Inspiration

The external intercostal muscles contract and the internal intercostal muscles relax, raising the ribs up and down.

The diaphragm contracts and flattens at the same time.

these will increase the volume of the thorax, causing the pressure of the thorax to decrease.

Air moves into the lungs and they inflate because atmospheric pressure is greater.

# data[].attributes.body
2.   Expiration

The internal intercostal muscles contract and the external intercostal muscles relax.

This lower the ribs down and inwards.

The muscle in the diaphragm relaxes and it bulges up due to pressure from the organs below.

these actions decrease the thorax volume causing the pressure inside the thorax to increase.

The recoil of the alveoli can helps to compel air out of the lungs.

# data[].attributes.body
Human ventilation is also carried out by the respiratory system. It is used to breathe in oxygen for natural processes and then expel gaseous wastes, such as moisture, carbon dioxide and trace amounts of other gases. This system gives oxygen directly to the blood; the blood distributes the oxygen everywhere else.

# data[].attributes.body
When you breathe, you have two part of this. The inspiration and the expiration. The inspiration is breathing in, when you breathing in, your diaphragm and rib pull on the lungs. The expiration is breathing out, when you breathing out, your diaphragm and intercostal muscles relax and this cause the chest cavity to decrease in volume.