A system of anatomy for the use of students of medicine / by Caspar Wistar.
- Caspar Wistar
- Date:
- 1825
Licence: Public Domain Mark
Credit: A system of anatomy for the use of students of medicine / by Caspar Wistar. 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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![scapula ; by the thyro-hyoidei, which pass to it direct* ]y upward from tiie thyroid cartilage : all of which counect it to parts below. To these should be added the stylo-hyoidei, which pass to it obliquely from be hind and rather from above; the mylo-hyoidei, which come rather anteriorly from the lateral parts of the lower jaw; and the genio-hyoidei, which arise from a situation directly anterior and superior, the chin. When these muscles are at rest, the situation of the os hyoides is, as above described, below the angles of the lower jaw : when those, in one particular direc- tion, act while the others are passive, the bone may be moved upwards or downwards, backwards or for- wards, or to either side. This bone may be consider- ed as the basis of the tongue; for the posterior extre- mity of that organ is attached to it; and of course the movements of the bone must have an immediate effect upon those of the tongue. The tongue is a flat body of an oval figure, but sub- ject to considerable changes of form. The posterior extremity, connected to the os hyoides, is commonly called its basis; the anterior extremity, which, when the tongue is quiescent, is rather more acute, is called its apex. The lower surface of the tongue is connected with a number of muscles, which are continued into its substance. This connexion is such, that the edges of the tongue are perfectly free and unconnected; and so is the anterior extremity for a considerable distauce from the apex towards the base. The substance of the tongue consists principally of muscular fibres intermixed with a delicate adipose substance. It is connected to the os hyoides by the hyoglossus muscle and also by some other muscular fibres, as well as by a dense membranous substance, which appears to perform the part of a ligament. This](https://iiif.wellcomecollection.org/image/b21037358_0034.jp2/full/800%2C/0/default.jpg)
