The topographical anatomy of the head and neck of the horse / [O. Charnock Bradley].
- Orlando Charnock Bradley
- Date:
- 1923
Licence: In copyright
Credit: The topographical anatomy of the head and neck of the horse / [O. Charnock Bradley]. Source: Wellcome Collection.
43/248 page 27
![trumpet-shaped, with a large, obli(]ue, elliptical opening bounded by twu free margins that meet at an angle at the apex of the pinna. The cavity within the cartilage is at first of considerable spaciousness, but, wliere the cartilage rests on the temporal muscle, a sudden nar¬ rowing takes place, so that the deeper part forms a short and relatively narrow tube. The lower part of the anterior free border splits into two parts that form the foundation of the crura helicis of the undis¬ sected ear. The anterior of these ends above in a pointed spina helicis^^ wliile the [)osterior is the crista helicis. In the lower part of tlie posterior border there is a notch (incisitra intertragica) that separates a small projection, the (intitragus, from a much more Fig. 11.—The cartilages of the ear. definite and plate-like tragus.- E'rom the lateral part of the deep extremity of the conchal cartilage there projects a narrow' pointed styloid process. This overlies the annular cartilage, and is connected w'ith the wall of the diverticulum of the Eustachian tube by a short band of fibrous tissue. Behind its root there is a foramen by w^hich the auricular branch of the vao^us nerve grains the interior. The scutular cd.rtildge (scutulum) ^ is a thin, curved plate, of irregularly triangular outline, lying upon the temporal muscle anterior to the broad base of the conchal cartilage. The annnlar cartilage is in the form of a ring, incomplete medially wdiere its borders are connected by elastic tissue. It is adherent to the margin of the external acoustic meatus of the ^ (lielix) [Or.], a coil. “ Tpdyos (tragos) [Gr.], a goat (in allusion to the hairs growing on the tragus of the hiunan ear). ‘Scutulum (diin. of scnhim) [h.], a shield.](https://iiif.wellcomecollection.org/image/b29820066_0043.jp2/full/800%2C/0/default.jpg)
