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Updated: May 9, 2025
Section of the cord must therefore give rise to an increased chemical movement and heat-production in the body. As already stated, this section affects very greatly the circulation, but the fever is independent of such action. The upper end of the medulla oblongata is continuous with a nervous mass which joins the two brain hemispheres together, and hence is known as the pons or bridge.
Oxidation is the great source of artificial heat, and animal heat is chiefly generated by the same process; in other words, animal heat is always the product of the chemical movements of the body, and these movements are almost exclusively of the character of oxidation. In the animal tissues a lessened oxidation is equivalent to a lessened heat-production, and vise versâ.
As we are therefore often unable to control heat-production, the best we can do is to abstract the caloric from the body whenever it becomes so excessive as to threaten serious results.
When the mass of the body is large, its heat is readily perceptible to the touch and by its effect upon the thermometer. In mammals and birds the heat-production is more active than in fishes and reptiles, and their temperatures differ in degree even in different species of the same class, according to the special organization of the animal and the general activity of its functions.
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