Variations in human myology observed during the winter session of 1867-68 at King's College, London / by John Wood.
- John Wood
- Date:
- 1868
Licence: Public Domain Mark
Credit: Variations in human myology observed during the winter session of 1867-68 at King's College, London / by John Wood. 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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![the abnormalities of that muscle. On this side of the subject no proper cleido-occipital was found; but on the other (left) side, this muscle was large, well formed, and separate, both from the trapezius and sterno-cleido- niastoid. 6. Levator anguli sc.apulce.—The variations of this muscle have been this year recorded with a view to throw light upon the occasional occur- rence in the human subject of the levator claviculce described by the author in former papers. In 2 males (Nos. 2 & 6) and 2 females (Nos. 20 & 29) this muscle was much divided, forming a distinctly double muscle, one from the two upper, and the other from the third and fourth cervical transverse processes. Such an arrangement is figured by Cuvier and Laurillard in their plate 7 of the Anatomy of a Negro. The upper one is there marked as the repre- sentative in Man of the omo-trachidien (levator clavicul«) of animals. A more perfect homologue of this muscle in the human subject, how- ever, has been recorded by Macwhinnie {op. cit. p. 194), and by the author in his former papers—arising from the transverse process of the atlas, and, in some, as low down as that of the third cervical vertebra, and inserted into the middle or outer third of the clavicle. Such a muscle has been noted and described by the author in 5 male subjects out of 174 of both sexes in whom it has been carefully looked for. Macalister has also found it in a spare female {op. cit.). In No. .5 of the subjects noted in column 8 of the Table of the present year, a considera- ble and long muscular slip, arising by a tendon from the transverse process of the third cervical vertebra, was found lying superficial to the fibres of the levator anguli scapulae, and inserted into the fascia placed immediately behind the clavicle and covering the axillary surface of the first digitation of the serratus magnus muscle. A muscle similar to this was found by Dr. Murie in the Bushwonian {op. cit.), and was rightly looked upon by him as an imperfect levator claviculce, the insertion of which had only just failed to reach the clavicle. Kelch records that he saw, in a female subject, a triple division of the levator anguli scapulae, the middle part sending off a slip to the scapulo-thoracic fascia (Beitriige zur pathologischeu Anatomic, 1813, XXV. S. 33). Rosenmiiller found a slip from the first cervical trans- verse process, inserted into the first digitation of the serratus magnus (De nonnullis Muse. &c. Leipzig, 1814, S. 5). These were, no doubt, speci- mens of the last-mentioned variety. In the male subject (No. 6) the levator anguli scapulae was divided into six slips along its whole length, arising from the five upper cervical transverse processes, and all inserted into the usual place. On the left side of a female (No. 20), the subject of fig. 3, a less exten- sive division of its fibres was found, combined with a double insertion, and a significant fusion of the lower portion with the serratus magnus and the rhomboideus minor. This arrangement sn])ports and illustrates the homology](https://iiif.wellcomecollection.org/image/b2227375x_0006.jp2/full/800%2C/0/default.jpg)
