The Edinburgh dissector, or, System of practical anatomy : for the use of students in the dissecting room / by a Fellow of the College of Surgeons of Edinburgh.

Date:
1837
Catalogue details

Licence: Public Domain Mark

Credit: The Edinburgh dissector, or, System of practical anatomy : for the use of students in the dissecting room / by a Fellow of the College of Surgeons of Edinburgh. Source: Wellcome Collection.

Provider: This material has been provided by the Woodruff Health Sciences Center Library at Emory University, through the Medical Heritage Library. The original may be consulted at the Woodruff Health Sciences Center Library, Emory University.

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    present a rough grooved appearance, indicative of car- tilages having been there. The laminae have not united in the situation of the spinous process. The pedicles have not united to the body. As age advances, an osseous centre appears in the cartilaginous bases, in the situation of the spinous process in the back and loins. Similar centres appear at the summits of the transverse processes, and one on each of the articular aspects of the body. These all unite into one mass in the natural healthy arrangement, or they may remain separate to an advanced period of life. , 36. The second cervical vertebra has an additional cen- tre for its odontoid process. The seventh has always an additional centre in front of its transverse processes; this in most cases unites; and thus forms the broad transverse process ; or, as has been observed by us, and of which the preparations are in our museum, may re- main separate, and be developed as a distinct cervical rib. THE THORAX, OR CHEST. 37. The Thorax is formed of the twelve dorsal ver- tebrae, (22) twelve pair of ribs, and the sternum. 38. The Sternum holds the same relation to the ribs anteriorly, as the vertebrae do posteriorly, and compa- rative anatomists draw a strong analogy between them. Its direction is from above downwards and forwards. It has been divided by anatomists into three parts, viz. a body in the centre, a manubrium, or handle, superiorly, a xiphoid, ensiform or sword-shaped appendix, inferior- ly. It is nearly symmetrical, elongated, and flattened, varying in breadth and thickness. Viewed separately it presents an anterior slightly convex, and a posterior concave surface, two lateral irregular edges, and an up- per and lower extremity. Its anterior surface is marked with four transverse lines; its posterior surface has a porous appearance, and also shews, though faintly, the four transverse lines ; its upper extremity is thick, pre- sents a semicircular notch in the centre. Proceeding from this notch on either side, we observe a shallow sigmoid articular surface, inclined outwards and back- wards, corresponding, but very imperfectly, to the