# data[].attributes.headline
how the pressure and volume effect the gas

# data[].attributes.subject
how the pressure and volume effect the gas

# data[].attributes.body
-Inspiration can explain as when the pressure inside human body is low the volume is bigger. And the atmospheric pressure higher than inside human body effects the gas willing to go in to human body.
-Expiration can explain as when the pressure goes up and made by the pushing of internal intercostal muscles. The volume goes smaller and the gas are pushes out of the body

# data[].attributes.body
Elastic recoil of the alveoli helps to force air out of the lungs

# data[].attributes.body
The above movements are all contribute to smaller the volume inside the thorax, which also contributes the pressure inside the thorax increases.

# data[].attributes.body
When expiration the diaphragm back to the relax place. Because of the pressure from the abdomen they also help to pushes the gas out.

# data[].attributes.body
Because we are pushing the gas out of the lung so the ribcage follows alone and pushing inwards to helping the gas come out.

# data[].attributes.body
When you breath out the intercostal muscle contract and the external intercostal muscle relax. Because is the inside doing works to pushes the air out.

# data[].attributes.body
When you breath in the pressure in the lungs is lower than the pressure in the atmospheric pressure. It involves air would like to move in to the lungs, and then the lungs are filled by air.

# data[].attributes.body
Because of the above actions occurs, it increase the volume of the thorax, and the pressure in the thorax decreases.

# data[].attributes.body
Also the diaphragm flatten.

# data[].attributes.body
When you breath in the air. The external intercostal muscles contract and the intercostal muscles relax, which pull the ribcage upward and outward.

# data[].attributes.body
Respiration is the release of energy involved by gas exchange in the mitochondria.
Two types of respiration:
1.aerobic respiration-------Require oxygen and release more energy.
2.anaerobic respiration------Doesn't involve oxygen.

# data[].attributes.body
cartoon man breathing picture:https://image.baidu.com/search/detail?ct=503316480&z=0&ipn=d&word=呼吸卡通&step_word=&hs=0&pn=48&spn=0&di=20324257690&pi=0&rn=1&tn=baiduimagedetail&is=0%2C0&istype=0&ie=utf-8&oe=utf-8&in=&cl=2&lm=-1&st=-1&cs=3915958981%2C365199686&os=1345266079%2C2113818027&simid=3471708765%2C471725311&adpicid=0&lpn=0&ln=1983&fr=&fmq=1490247216411_R&fm=rs6&ic=undefined&s=undefined&se=&sme=&tab=0&width=undefined&height=undefined&face=undefined&ist=&jit=&cg=&bdtype=0&oriquery=呼吸&objurl=http%3A%2F%2Fa0.att.hudong.com%2F27%2F74%2F01300000822820127960741770320_s.jpg&fromurl=ippr_z2C%24qAzdH3FAzdH3Fks52_z%26e3Bftgw_z%26e3Bv54_z%26e3BvgAzdH3FfAzdH3Fks52_lj88lcjja8a81w1j_z%26e3Bip4s&gsm=0&rpstart=0&rpnum=0

Breath in and out of the diaphragm action picture:
https://images.search.yahoo.com/search/images;_ylt=AwrB8piQmtNYD1MAFhiJzbkF;_ylu=X3oDMTBsZ29xY3ZzBHNlYwNzZWFyY2gEc2xrA2J1dHRvbg--;_ylc=X1MDOTYwNjI4NTcEX3IDMgRhY3RuA2NsawRiY2sDMjUyY2lmZGNjdTZyNiUyNmIlM0QzJTI2cyUzRHZsBGNzcmNwdmlkA0RUaXFyRFk1TGpFaWlaSjdXTThiWmdaMk1URTRMZ0FBQUFEUlBVOTQEZnIDeWZwLXQEZnIyA3NhLWdwBGdwcmlkA0syWTlXYzJUU2NxOEtaUEg5UElMQUEEbXRlc3RpZANudWxsBG5fc3VnZwMxMARvcmlnaW4DaW1hZ2VzLnNlYXJjaC55YWhvby5jb20EcG9zAzAEcHFzdHIDBHBxc3RybAMEcXN0cmwDMjIEcXVlcnkDaW5zcGlyYXRpb24gZXhwaXJhdGlvbgR0X3N0bXADMTQ5MDI2MjczMAR2dGVzdGlkA251bGw-?gprid=K2Y9Wc2TScq8KZPH9PILAA&pvid=DTiqrDY5LjEiiZJ7WM8bZgZ2MTE4LgAAAADRPU94&p=inspiration+expiration&fr=yfp-t&fr2=sb-top-images.search.yahoo.com&ei=UTF-8&n=60&x=wrt&y=Search#id=7&iurl=http%3A%2F%2Fwww.singintune.org%2Fbreathing.jpg&action=click

# data[].attributes.body
-Ventilation requires pressure changes to occur in the lungs, so that air can be forced in and out of the alveoli.
-The pressure changes are brought about by the movement of two set of muscles: internal intercostal muscle and external intercostal muscle.