Handbook of diseases of the ear : for the use of students and practitioners / by Richard Lake.

Date:
1904
Catalogue details

Licence: In copyright

Credit: Handbook of diseases of the ear : for the use of students and practitioners / by Richard Lake. 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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    short process, or processus brevis ; the other directed forwards and inwards towards—and in the foetus through— the Glaserian fissure, the processus gracihs. The latter is represented in the adult by a minute point of bone, to which is attached the anterior ligament. The handle is directed nearly vertically downwards, and is intimately connected with the membrana tympani. The head of the malleus is attached to the roof of the tympanum by a liga- ment termed the suspensory ligament (Fig. 12). The incus consists of a body and two processes, the body FIG. 7. DISSECTION SHOWING THE RELATIONS OF THE CHORDA TYMPANI AND THE OSSICLES. CT, Chorda tympani ; S, stapes ; ST, stapedius tendon ; FR, fenestra rotunda. articulating with the head of the malleus, to which it is united by a capsular ligament. The short process projects almost horizontally backwards, and articulates with the floor of the passage from the tympanum to the antrum. The long process descends parallel with the handle of the malleus to the level of the centre of the fenestra ovalis, where it articulates with the head of the stapes, to which it is attached by a capsular ligament. The third ossicle, or stapes, which closely resembles a stirrup, consists of a foot- plate, two crurfE, a neck, and a head. The footplate articulates with the inner edge of the fenestra ovalis, to