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Breathing: Scientific Version
To appreciate significance of total breathing, it is essential to understand the special importance of breathing on the basis of scientifically established facts.
Respiration
The body needs a continual supply of oxygen. One may survive for a long time without food, for less than a week without water but one would not last more than a few minutes without oxygen. In addition, for a continual supply of oxygen, the body also needs some means of disposing of the waste carbon dioxide produced by the function of the body cells. Breathing or respiration provides a continual replenishment of the oxygen in the lungs, drawing in fresh air and expelling waste gases.
Organs of the System
The respiratory system includes passageways and tubes through which the air passes the nose, trachea, bronchi and bronchioles arranged in a sequence that branches and rebranches and looks like an inverted tree, the tubes and tiny air sacs called alveoli in which the exchange of the gases takes place. The bronchioles and alveoli constitute the lungs. The system includes a bellow's arrangement-the rib cage operated by muscles and controlled by nerves.
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