please give me your shortest and simpelest deffinition of breathing.?
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Cells requires oxygen for its function. \n\nTo be precise:\n\nThe citric acid cycle (Krebs cycle) is a series of chemical reactions of central importance in all living cells that utilize OXYGEN as part of cellular respiration.
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Your lungs contain almost 1500 miles of airways and over 300 million alveoli. \nEvery minute you breathe in 13 pints of air.
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Take a few 'Deep Breaths.'
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PNEUMONO­ULTRA­MICRO­SCOPIC­SILICO­VOLCANO­CONIOSIS \n 45 letters long
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Humans typically breathe between 12 and 20 times per minute, with children breathing faster than adults. Babies may breathe as much as 40 times per minute. Adults normally breathe about 500-700ml of air at a time. An average 14 year old takes around 30,000 breaths per day.
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air is moved into the lungs
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http://www.ama-assn.org/ama1/pub/upload/images/446/respiratorydetail.gif
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sorry my answer will be the shortest one i have given till now, but ok here it goes: \n\nfrom and within yourself!
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You breathe in and out anywhere from 15 to 25 times per minute without even thinking about it. When you exercise, your breathing rate goes up -- again, without you thinking about it. You breathe so regularly that it is easy to take your lungs for granted. You can't even stop yourself from breathing if you try! \n\nYour lungs are complex organs, but what they do is take a gas that your body needs to get rid of (carbon dioxide) and exchange it for a gas that your body can use (oxygen). In this article, we will take a close look at how your lungs work and how they keep your body's cells supplied with oxygen and get rid of the carbon dioxide waste. We will explain some of the conditions and diseases that make breathing harder and cause the lungs to fail. We will also explain why you can't hold your breath for a long time and why you cough or hiccup. \n\nThere is alot more at this web site.  Good luck!\nhttp://science.howstuffworks.com/lung.htm
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cfm. Cubic feet per minute, a measure of air flow
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pneumono­ultra­micro­scopic­silico­volcano­coniosis\n\nhttp://www.fun-with-words.com/word_longest.html
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Try this site...\n\nhttp://www.grisda.org/tstandish/teachers/labs/respiration.doc
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Blah, blah, blah.  You know, with every breathe you take, you're one breathe closer to death.  Better stop breathing!
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By taking slow deep breaths.
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Just breathe, your fine!!
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Many but these are the most common\nshortness of breath\nnausea\npain in chest, a little on left side\npain in left arm\nextreme pressure on the chest or arm
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If you mean cellular respiration, then it would be about 70%.  The majority of the rest is used for neuronal transmission-specifically for maintanence of the ionic gradient.  If you are speaking of merely gross respiration (the movement of air in and out of your lungs) then it would be a very small percentage.