. Animal physiology. Physiology, Comparative; Physiology, Comparative. 140 PREHENSION OF FOOD. secretions poured into the alimentary canal, find their way out through the intestinal tube; and are voided at its second orifice by the act of defecation. And lastly, the nutritious chyle is taken up by vessels that are distributed upon the walls of the digestive cavity, and undergoes a gradual change by which it is converted into blood. These two processes are called absorption and sanguification, (or manufacture of blood). Each of the fore- going stages will now be separately considered. Prehensio
. Animal physiology. Physiology, Comparative; Physiology, Comparative. 140 PREHENSION OF FOOD. secretions poured into the alimentary canal, find their way out through the intestinal tube; and are voided at its second orifice by the act of defecation. And lastly, the nutritious chyle is taken up by vessels that are distributed upon the walls of the digestive cavity, and undergoes a gradual change by which it is converted into blood. These two processes are called absorption and sanguification, (or manufacture of blood). Each of the fore- going stages will now be separately considered. Prehension of Food. 172. The introduction of aliment within the entrance to the. OUSTITI. digestive cavity is accomplished in various methods in different animals. In the Mammalia in general, the aperture of whose mouth is guarded by fleshy lips, these, with the jaws and teeth, are the chief instruments of this operation. But in Man and the Monkey tribe (Fig. 80) the division of labour is car- ried further; the food being laid hold of by the ante- rior members, or hands, and by them carried to the mouth. Where tho hand has the power of grasping, and especially. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Carpenter, William Benjamin, 1813-1885. London : Wm. S. Orr and Co.
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