. The physiology of domestic animals ... Physiology, Comparative; Veterinary physiology. Fig. 96.âLower Incisor Tooth of Horse. {Nuhn.) c, worn-down surface of table of tooth, showing the alternate layers of enamel, »; z, dentine; and x, dis- colored cement filling infundibulum. of this central depression in the incisor teeth of the horse, through the gradual wearing down of the surface, an index is furnished of the age of the horse,âa matter which will subsequently be alluded to. The molar teeth of herbivorous animals are chiefly compound teeth,â that is, the enamel dips clown below the surf
. The physiology of domestic animals ... Physiology, Comparative; Veterinary physiology. Fig. 96.âLower Incisor Tooth of Horse. {Nuhn.) c, worn-down surface of table of tooth, showing the alternate layers of enamel, »; z, dentine; and x, dis- colored cement filling infundibulum. of this central depression in the incisor teeth of the horse, through the gradual wearing down of the surface, an index is furnished of the age of the horse,âa matter which will subsequently be alluded to. The molar teeth of herbivorous animals are chiefly compound teeth,â that is, the enamel dips clown below the surface of the crown, and in some animals, as in the elephant, the com- z pound teeth may be regarded as a series of flattened teeth arranged side by side in the jaw, and connected only by the cement, or crusta petrosa (Figs. 97 and 98). This substance is like that invari- ably found covering the fangs of teeth, but which only in compound teeth appears upon the crown. The pointed fang or fangs of teeth are pierced by an- opening which communicates with a cavity in the centre of the body of the tooth, called the pulp-cavity, which contains blood- Fl8_ ,d Uppee MotAR 0P vessels and nerves which enter through Horse, showing Wear of ° Table. (Nuhn.) the Opening in the fang, and in the pulp- <â ;, depression on table; pi, depression on L side ; s, enamel ; z, dentine; Cae, cement; a, ex- cavity ramify over a delicate flbro-cellular temal or taecal surface; ;, internal or oral surface. structure constituting the pulp (Fig. 99), The pulp is continuous over its surface with an infinite number of small projections which extend into the tubes of dentine in the inner structure of the tooth. These three different substances, which constitute the substances of. 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 wo
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectphysiologycomparativ
