LUNGS

Pacific Press Publishing Company · Oakland, California · Aug 20, 1896

FromSigns of the Times, Vol. 22, No. 33.

How is it that the lungs can increase through athletic exercise? By a mechanism well known in physiology, by filling out of certain air-cells ordinarily inactive, which only come into play during forced inspiration. The expansion of the pulmonary vesicles is complete in proportion to the quantity of the air introduced. The atmospheric air, drawn into the lungs by a very powerful inspiration, seeks out the most obscure corners and inflates the air-cells of certain regions which ordinarily have no part in the respiratory function. A definite increase in the volume of the lungs is the consequence of frequent repetition of this supplemental respiration,—Medical Gleaner.