Living Things: Their Forms and Parts. 8—' The Breath of Life '
R. C. GARRY , M.B., Ch.B., D.Sc. Professor of Physiology in University College, Dundee, the University of St. Andrews
Only by union with oxygen can the energy stored in food be liberated. To this end, oxygen must be taken into the body.
This lesson describes the lungs and the muscles of respiration, showing how, hy their aid, the body obtains oxygen. The manner of removing carbon dioxide-a waste gas-will also be mentioned.