Elementary anatomy and physiology : for colleges, academies, and other schools elementaryanato00hitc Year: 1869 AND PHYSIOLOGY. 51 Fig. 60. the only movable bone of the head or face. It contains the sixteen lower teeth, is of an arched form, and at each ex- tremity has a square-shaped process for articulation with the temporal bones, and the attachment of muscles. 118. Vomer.—The name of the Vomer is derived from the Latin meaning a 'plow- share,' on account of its approximate resem- blance to that object. It completely separates the nostrils from each other, and like the tur- binated bones
Elementary anatomy and physiology : for colleges, academies, and other schools elementaryanato00hitc Year: 1869 AND PHYSIOLOGY. 51 Fig. 60. the only movable bone of the head or face. It contains the sixteen lower teeth, is of an arched form, and at each ex- tremity has a square-shaped process for articulation with the temporal bones, and the attachment of muscles. 118. Vomer.—The name of the Vomer is derived from the Latin meaning a 'plow- share,' on account of its approximate resem- blance to that object. It completely separates the nostrils from each other, and like the tur- binated bones gives at- tachment to no mus- cles. The Vomer. 1, 2, Posterior and Superior Surface hollowed to receive the Azygos Process of the Sphenoid Bone. 3, Anterior Surface for the Car. tilaginous Septum of the Nose. 119. Number of Teeth.—The Teeth of the Human Adult when all present in the jaws, number thirty-two. And al- though properly bones, still they differ in three respects: 1st, Organic Composition. 2nd, Time of Development and Replacement. 3d, Decay when fractured. 120. Organic Composition, Cementum, Dentine, Enamel, Microscopic Structure of Enamel, Development of Teeth, Nasmyth's Membrane.—The Teeth are composed of three substances: a Cementum which forms a thin coating on the fangs of the teeth, and which thickens in advanced life; the Dentine which resembles bone in its external characteristics and makes the largest part of the teeth, containing the prin- cipal vessels and nerves of the teeth; and the Enamel, the hardest substance in the human body, which is a covering to 118. From what does the Vomer derive its name? What two cavities does it sep- arate? 119. How many teeth in an adult? In what respects do they differ from the other hones of the body ? 120. Of what substances are the teeth composed ?
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