A manual of diseases of the nose and throat / by Cornelius Godfrey Coakley.

Date:
1906
Catalogue details

Licence: In copyright

Credit: A manual of diseases of the nose and throat / by Cornelius Godfrey Coakley. Source: Wellcome Collection.

Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.

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    The outer wall is traversed from before backward by three scroll-shaped bones, known as the inferior, middle, and superior turbinated bones. When covered with the mucous membrane and underlying tissues we shall 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 the outer wall of the nose. The middle turbinate (Fig. 2, M, and Fig. 3, 6), a process of the ethmoid bone, lies nearly parallel to the inferior turbinate and extends about as far posteriorly, but is usually not over two-thirds the length of the inferior turbinate. The superior turbinate (Fig. 2, U, and Fig. 3), also a process of the ethmoid bone, extends from the pos- terior margin of the nose and one-third of the distance to the anterior portion of the nose. The size and shape of the superior turbinate, how- ever, vary considerably in different skulls. There is occasionally a fourth turbinate, rudimentary in character, parallel to and above the superior turbinate. Dimensions. The antero-posterior diameter of the nasal cavity along the floor is from one and three- fourths to two inches. The vertical height of the nasal cavity anteriorly, just within the anterior orifice, is about five-eighths of an inch. The height of the nasal cavity at the posterior extremity is from one to one and one-fourth inches. The lining membrane of the outer wall of the nose, for a distance of about one-half inch, is composed of stratified epithelium, through which pass a number of hairs, called vibrissse. This portion of the cavity of the nose is called the vestibule (Fig. 2, V). The re-