. The anatomy of the human body. Human anatomy; Anatomy. periority in size. In the lower jaw, on the contrary, the lateral incisors are the larger, though the difTerence is but slight. The Canine Teeth {Jigs. 87, 88). These are four in number, tivo in each jaw. They are situated on either side exter- nally to the incisors, and therefore are nearer to the fulcrum, so that they can overcome a greater resistance. These teeth are most completely developed in the carnivora. The tusks of the boar and of the elephant are also canine teeth. General Characters.—They are the longest of all the teeth, bo
. The anatomy of the human body. Human anatomy; Anatomy. periority in size. In the lower jaw, on the contrary, the lateral incisors are the larger, though the difTerence is but slight. The Canine Teeth {Jigs. 87, 88). These are four in number, tivo in each jaw. They are situated on either side exter- nally to the incisors, and therefore are nearer to the fulcrum, so that they can overcome a greater resistance. These teeth are most completely developed in the carnivora. The tusks of the boar and of the elephant are also canine teeth. General Characters.—They are the longest of all the teeth, both in the crown and in Fi--. 87. Fig. 88. the root; they therefore project a little beyond the incisors, particu- t^ larly in the upper jaw. Their croivn (a) is thick and irregularly conoid ; it is somewhat enlarged immediately above the neck, and terminates in a blunt point cut obliquely at the sides (see^o-. 88), and grooved be- hind. The anterior surface {fig. 87) is convex, the posterior concave. The canine teeth have much longer and larger roots (b) than any oth- er, and their alveoli are remarkably prominent. The root is flattened on the sides, each of which presents a vertical groove traversing its- entire length {see fig. 88). Differential Characters.—The superior canine teeth are distinguished from the inferior by their greater length and thickness. The roots cor- respond to the ascending process of the superior maxilla, and in some subjects are prolonged to the base of that process. The length of their root explains the difficulty of extracting them, and the accidents by which this operation is sometimes fol- lowed. There are several preparations in the museum of the Faculty of Medicine, in which the canine teeth are seen developed in the substance of the ascending process, and reversed, so that the crown is turned upward and the root downward. The Molar Teeth {figs. 89 to 92). The molar teeth are twenty in number, ten in each jaw. They occupy the last five alveol
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Keywords: ., boo, bookcentury1800, booksubjectanatomy, booksubjecthumananatomy
