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> Julius Loennechen > > > > [....] The +oxygen > > window+ is the non-inert part of a breathing mix which does not contribute > > to bubble formation. It is, slightly simplified, the partial pressure of > > oxygen at a given depth. > > This is not my definition of "oxygen window." The oxygen window is > the "inherent unsaturation" of the tissues brought about by the > consumption of O2 in the metabolic process. Simply stated: you inhale > ~21% O2 and exhale only 16% O2. This matches my understanding... > The difference is not completely made > up in CO2 produced. Could you elaborate on this? My understanding is that there is nearly complete correlation between consumed O2 and expired CO2... Conservation of mass, you know. I'd like to hear more. As I understand it, the Kreb's Cycle, where O2 is used to oxidize glucose and convert it into smaller units of energy in the form of ATP, is pretty much the only place where O2 is consumed in the body, and this process results in one CO2 molecule for every O2 molecule used in the oxidation process. Dave Waller YMCA Instructor dave@hp*.cu*.hp*.co* "This ain't your father's YMCA :-)" (408) 447-4413 Hewlett-Packard Co.
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