A treatise on diseases of the nose and its accessory cavities.
- Greville MacDonald
- Date:
- 1892
Licence: Public Domain Mark
Credit: A treatise on diseases of the nose and its accessory cavities. Source: Wellcome Collection.
Provider: This material has been provided by the Harvey Cushing/John Hay Whitney Medical Library at Yale University, through the Medical Heritage Library. The original may be consulted at the Harvey Cushing/John Hay Whitney Medical Library at Yale University.
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![bone. This is as liable as the inferior turbinated body to erection, although its smaller bulk renders it less conspicuous. But the appreciation of its real character is quite as important, seeing that its turgidity may import- lead to the supposition that the middle turbinated j^t°fndls~ body is in contact with the septum, whereas the between erectile tissue is merely concealing the slit between the ^eai'aud convex margin of the middle turbinated and the inner pathoio- waJl. According to the degree of prominence in the f^a inferior turbinated body we see more or less of the free convex border of the middle spongy bone, between which and the septum there is a clear passage, called the olfactory fissure. The latter varies considerably Olfactory in width even in conditions of health. These points fissure are important to bear in mind, seeing that in certain inflammatory conditions the middle turbinated tissue is found in contact with the septum, and the physiological may be mistaken for the pathological, or vice vcrsd. Between the free margin of the bone, curved inwards on itself, and the outer wall of the fossa is a deep sulcus, corresponding with the con- cavity of the spongy bone, so that the free margin appears to hang downwards from the roof. It must be observed that between the anterior extremity of the middle spongy bone and the nasal process of the upper jaw there is a free passage, which, however, is consider- ably narrower in the living subject than in the skeleton. In pathological conditions it may be obstructed. That portion of the fossa which lies below the upper margin of the inferior spongy bone is commonly spoken of as the inferior meatus ; into it anteriorly Boundaries opens the naso-lachryinal canal. Between the concavity of t]'e t , . . meati of the middle turbinated bone and the convexity of the inferior extends the middle meatus, into which open, above and anteriorly, the anterior ethmoidal cells. D](https://iiif.wellcomecollection.org/image/b21014875_0059.jp2/full/800%2C/0/default.jpg)
