A manual of diseases of the nose and throat . Anteroposterior section of the nose, showing the septum. (Merkel.) The lines of junction of the several pieces are indicated by the dotted lines. The vestibule and the vibrissas are also pictured. The roof is composed from before backward of thenasal bones, the cribriform plate of the ethmoid, andthe body of the sphenoid. ANATOMY OF THE NOSE. 19 The outer wall is composed of the superiormaxillary, lachrymal, palate, and sphenoid bones. The inner wall, called the septum, and separatingone cavity from the other, is composed of the perpen-dicular plat
A manual of diseases of the nose and throat . Anteroposterior section of the nose, showing the septum. (Merkel.) The lines of junction of the several pieces are indicated by the dotted lines. The vestibule and the vibrissas are also pictured. The roof is composed from before backward of thenasal bones, the cribriform plate of the ethmoid, andthe body of the sphenoid. ANATOMY OF THE NOSE. 19 The outer wall is composed of the superiormaxillary, lachrymal, palate, and sphenoid bones. The inner wall, called the septum, and separatingone cavity from the other, is composed of the perpen-dicular plate of the ethmoid, the vomer, and the tri-angular cartilage of the septum (Fig. 1). The septum is seldom perfectly straight, but usuallypresents slight deviations from the median line, and is Fig. Anteroposterior section of the nose, showing the outer wall of the rightnasal cavity. (Zuckerkandl.)L. Inferior turbinate. M. Middle turbinate. A. Anterior end of middleturbinate. U. Superior turbinate. F. S. Frontal sinus. S. S. Sphenoidalsinus. E. Eustachian orifice. V. Vestibule. also the seat of small thickenings on one or the otherside. These thickenings or ridges most commonly fol-low the lines of junction of the three pieces composingthe septum. 20 ANATOMY OF UPPER RESPIRATORY TRACT The outer wall is traversed from before backwardby three scroll-shaped bones, known as the inferior,middle, and superior turbinated bones. When coveredwith the mucous membrane and underlying tissues weshall speak of them as the turbinates. The inferior turbinate (Fig. 2, L, and Fig. 3) ex-tends about three-fourths of the entire length of theouter wall of the nose. The middle turbinate (Fig. 2, M, and Fig. 3, b), aprocess of the ethmoid bone, lies nearly parallel to theinferior turbinate and extends
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