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Passive?
"Within the alveolar system of the lungs, molecules of oxygen and carbon dioxide are passively exchanged between the gaseous environment and the blood." While gases diffuse in a passive manner between alvioli and the blood, I do not think we should state this as passive because the diaphragm contracts, consuming energy, therefore making the process as a whole active. --Glasgallow 16:45, 29 January 2006 (UTC)
Response: The exchange of oxygen and carbon dioxide in the aveoli is passive since the process uses passive diffusion. However, you can add that the inhalation process is active since it requires the contraction of the diaphragm whereas exhalation is passive.
Response:
After a certain point, air does not move towards the alveoli anymore
due to the active musculair process of breathing - but purely through
diffusion. This means that this air is not completely renewed at every in/exhailation, but the 'dead air' will be mixed with 'fresh air'.
nichica@msn.com
Trees consume oxygen
"Even trees have respiratory systems, taking in carbon dioxide and emitting oxygen during the day, consuming carbon dioxide and producing oxygen constantly." Actually, plants also consume oxygen, no? That is, they are aerobic organisms, like animals, that use oxygen to break down food. I think it's important to mention this, because it's a common misconception that plants do not use oxygen. I'm neither a plant physiologist nor wiki-savvy, but can someone who is both edit this accordingly? Thanks. Rufescens 21:23, 4 September 2005 (UTC)
- I believe it's pefectly correct as is, that is "taking in carbon dioxide and emitting oxygen during the day". It just doesn't say everything. Probably should be edited anyway, though. Snake712 11:43, 2 May 2006 (UTC)
needs cleaning up
I've added the cleanup-date tag to the top of the article, as it needs some serious work in terms of wikification (paragraph gaps are messed up etc.) and the text doesn't flow well. Parts of the article give the impression of having been copy-pasted from somewhere. --222.153.190.49 01:07, 2 October 2005 (UTC)
pictures?
I think this article would be served well by a picture, maybe something out of Gray's Anatomy. Does anyone have any suggestions? Gary 21:26, 29 April 2006 (UTC)
I found an illustration that might be useful, but I don't know how to put it into the article. Maybe someone more knowledgable about Misplaced Pages can add it. I think Fig. 962 from the link below would work nicely. Of course, if someone else finds a better one, that can be used instead. http://www.bartleby.com/107/237.html
Just Change It
these are very minor changes you guys want. fix the few topics you disagree on to be more specific. just remember that many people use wikipedia for research and this is important for boiology and health classes
Unconscious breathing
I think it would be interesting to see a section on the differences between conscious and unconscious breating, if there is much known about it. Meekohi 20:15, 1 November 2006 (UTC)