It is not the intent of this publication to. restrict the authority of the joint force. commander (JFC) from organizing the force. and executing the mission in a manner the JFC. deems most appropriate to ensure unity of. effort in the accomplishment of the overall. mission.
Breathing is only one of the processes that delivers oxygen to where it is needed in the body and removes excess carbon dioxide. The next process in this chain of events is the transport of these gases throughout the body by the circulatory system, and then their uptake or release from the respiring cells.
The element and its compounds make up 49.2% by mass of the Earthâs crust, and about two-thirds of the human body. There are two key methods used to obtain oxygen gas. The first is by the distillation of liquid air. The second is to pass clean, dry air through a zeolite that absorbs nitrogen and leaves oxygen. A newer method, which gives oxygen of a higher purity, is to pass air over a partially permeable ceramic membrane.