. Diseases of the nose and throat . an is that they are of value architecturally inthe building of the face. A hollow bone is lighter than asolid one. The face contains three sets of cavities whichhave obvious and very important functions—the singlecavity of the mouth, the two nasal cavities and the functions of these cavities demand accurate adjust-ment of certain of their parts, the teeth must fit properlyfor mastication, the nasal respiratory slits should be ofuniform breadth, and the orbits must fit a spherical eye-ball. These cavities are so closely packed together thatdeformit
. Diseases of the nose and throat . an is that they are of value architecturally inthe building of the face. A hollow bone is lighter than asolid one. The face contains three sets of cavities whichhave obvious and very important functions—the singlecavity of the mouth, the two nasal cavities and the functions of these cavities demand accurate adjust-ment of certain of their parts, the teeth must fit properlyfor mastication, the nasal respiratory slits should be ofuniform breadth, and the orbits must fit a spherical eye-ball. These cavities are so closely packed together thatdeformity of one tends to deform the others. In thecomplicated growth of the skull there are several factorswhich may tend to asymmetry. The accessory sinusesfill in the unused space, making it easier for these cavitiesto adjust themselves to accidents of development. CHAPTER IVDISEASES OF THE EXTERNAL NOSE FRACTURE OF THE NASAL BONES The nasal bones are united with the frontal above,with each other along the median line, with the septum. Fig. 20.—Fracture of the nasal bones. below, and with the nasal process of the superior maxilla on each side. They are comparatively thick above, but 53 54 DISEASES OF THE NOSE AND THROAT as they approach the free edge below they become broaderand thinner; forming with the nasal process an arch whichowes its strength more to its shape than to its shape of this arch is less suitable for resisting blows
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Keywords: ., bo, bookcentury1900, bookdecade1910, booksubjectnose, bookyear1915
