Observations on some of the most frequent and important diseases of the heart; on aneurism of the thoracic aorta; on preternatural pulsation in the epigastric region: and on the unusual origin and distribution of some of the large arteries of the human body. Illustrated by cases / by Allan Burns.
- Date:
- 1809
Licence: Public Domain Mark
Credit: Observations on some of the most frequent and important diseases of the heart; on aneurism of the thoracic aorta; on preternatural pulsation in the epigastric region: and on the unusual origin and distribution of some of the large arteries of the human body. Illustrated by cases / by Allan Burns. 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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![bifurcates at the angle of the jaw ; this is a most uncertain rule, for the position of the an- gle of the jaw, varies according to the period of life at which we examine the subject. It is re- latively high seated previous to the evolution of the teeth ; and therefore in infancy the large arteries are much exposed. This exposure con- tinues till the evolution of the permanent teeth has brought the jaw to its just proportion with the other parts of the body. In the adult we there- fore generally find the bifurcation of the caro- tid placed near to the angle of the jaw, but this never hapjiens in the young subject, neither is it uniformly met with even in the full grown person. The ]dace of division of the com- mon carotid artery, is liable to great variety both in point of situation and appearance, some- times it bifurcates low in the neck, at other times, it does not divide at all, but merely sends oif branches on every side, and in not a few in- stances, instead of the external carotid arterv, we find a series of large branches. In one of our subjects, the common carotid separated in- to its two trunks low in the neck, opposite to the upper edge of the sixth cervical vertebra?. The trunks which wer-e nearly of equal size, mounted up the side of the larynx parallel to each other, and were inveloped as usual in the same sheath with the internal jugular vein, and eight pair of nerves. The place of division of the carotid, was three inches below the arurle of](https://iiif.wellcomecollection.org/image/b2194670x_0299.jp2/full/800%2C/0/default.jpg)
