On the myology of the terrestrial carnivora. Pt. I. Muscles of the head, neck, and fore-limb / by B.C.A. Windle and F.G. Parsons.

  • Windle, Bertram C. A. (Bertram Coghill Alan), 1858-1929.
Date:
1897
Catalogue details

Licence: Public Domain Mark

Credit: On the myology of the terrestrial carnivora. Pt. I. Muscles of the head, neck, and fore-limb / by B.C.A. Windle and F.G. Parsons. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    surface of the platysma, and so reaches the angle of the mouth. In the Polecats (69, 70), where the head is a good deal elongated this muscle, instead of coming all the way from the ear, rises froin the anterior part of the zygoma just behind the orbicularis palpe- brarum (see fig. 3, p. 375). As we think it an advantage, wherever possible, to use the names familiar to human anatomists, we shall speak of this as the levator auguli oris, though it only comes from the zygoma in certain cases. The second muscle which is covered by the platvsma is the stenio-faciahs or sphincter colli: this rises from the back of the root of the ear and meets its fellow of the opposite side in the mid- ventral line of J-he neck, covering in its course the parotid gland (see ng. p. 3/5). In the Felidae this muscle is strongly marked Fig. 1. and the anterior part comes from the fascia over the masseter. In no case that we have seen does it reach, as in the rodents, to the sternum^ (XLI.). The orbicularis palpebrarum is not very strongly marked, from its posterior edge two or three bundles of mnscular fibres rnn backwards and act as retractors of the angle of the eye ; these are best seen in the Canidaa. The levator labii superioris is always well marked and passes from the anterior angle of the eye to the upper lip, deep to it is a plane of muscle acting on the nose. The orbicularis oris is well marked. The occipito-frontalis is a plane of fibres which covers the scalp; the lateral part of the frontalis is attached posteriorly to the ear and forms the anterior auricular muscle, w'hile the lateral part of the occipitahs is attached ante- riorly to the ear and is thickened to form the transversus nuchm ; deep to this are one or two posterior auricular muscles. It will thus be seen that the main muscles of the face are disposed in such a w'ay as to draw the soft parts of the lips and nose clear of the teeth, and also to lay back the ears; the sphincter ’ In Bathycrgm the iterno-facialis and sphincter colli arc coexistent (XLII.)- [6]