A treatise on the science and practice of midwifery / By W. S. Playfair.
- William Smoult Playfair
- Date:
- 1885
Licence: Public Domain Mark
Credit: A treatise on the science and practice of midwifery / By W. S. Playfair. Source: Wellcome Collection.
Provider: This material has been provided by the Augustus C. Long Health Sciences Library at Columbia University and Columbia University Libraries/Information Services, through the Medical Heritage Library. The original may be consulted at the the Augustus C. Long Health Sciences Library at Columbia University and Columbia University.
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![monly entirely disappears, so that the orifice of the os uteri is on a level with the roof of the vagina. Internal Surface of the Uterus.—The internal surface of the uterus comprises the cavities of the body and cervix—the former being rather less than the latter in length in virgins, but about equal in women who have borne children—separated from each other by a constriction form-, ing the upper boundary of the cervical canal. The^avity of the body is_jtnaiigular in shape, the base of the triangle being Jornied_ by a line joiiimg the openIngsl)f the Fallopian tubes, its apex by the upper orifice of the'cervix, oFTnternal os, as it~is sonietimes called. In the virgin its boundaries are somewhat convex, projecting inward. After child- bearing they become straight or slightly concave. The opposing surfaces of the cavity are always in contact in the healthy state, or are only sep- arated from each other by a small quantity of mucus. Cavity of the Cervix.—The cavity of the cervix is spindle-^aped or fusiform, narrower above and below at the internal and external os uteri, and somewhat dilated between these two points. It is flattened Fjg. 21. Portion of Interior of Cervix. (Enlarged nine diameters.) (After Tyler Smith and Hassall.) fr<jm Ijefore backward, and its opposing surfaces also lie in contact, but not so closely as those of the body. On the mucous lining of the ,, anterior and po.sterior surfaces is a prominent perpendicular ridge, with a lesser one at each side, from which transverse ridges proceed at more or less acute angles. They have received the name of the arbor vitce. Acf!ording to Guyon, the ])cr}x;ndi(!u]ar ridges are not exactly opposite, so that they fit into each otli(!r, and serve more com])letcly to fill up the cavity of the cervix, especially toward tlu; internal os (l^^ig. 21). The u-^](https://iiif.wellcomecollection.org/image/b2121072x_0067.jp2/full/800%2C/0/default.jpg)
