Identifier: scienidw00lusk (find matches)
Title: The science and art of midwifery
Year: 1897 (1890s)
Authors: Lusk, William Thompson, 1838-1897
Subjects: Obstetrics Women Pathology
Publisher: New York, D. Appleton
Contributing Library: Yale University, Cushing/Whitney Medical Library
Digitizing Sponsor: Open Knowledge Commons and Yale University, Cushing/Whitney Medical Library

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tion of the uterus, causes theexternal orifice to look nearly directly backward, a fact which is readilyrecognized when the organs are examined in situ by means of a Simssspeculum. Upon lateral section, the uterus is found to be provided with acavity, in which the upper portion or cavity of the body is to be dis-tinguished from the lower portion or canal of the cervix. The cavityof the body presents a triangular shape with convex borders. The twoupper angles communicate by a small opening, hardly large enough toadmit a fine bristle, with the canal of the Fallopian tubes. At thelower angle is situated the OS internum, a circular orifice, large enoughto admit a uterine sound, which forms the internal anatomical limitbetween the body and the cervix. The canal of the cervix has a fusi-form shape, and is included between the internal and external orificesalready described. Its inner surface is characterized by two longitu-dinal ridges, occupying the anterior and posterior walls, from which
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Fig. 8.—A, muciparous uterus, anterior surface ; B, uterine cavity. (Sappey.) branching processes extend obliquely upward, giving rise to an appear-ance which justifies the title—arbor vita uterina. In women who have borne children, the uterus measures three inchesin length, of which nearly two inches belong to the body and one tothe cervix. There is increased convexity of the fundus. The distance 14 PHYSIOLOGICAL ANATOMY. between the insertions of the Fallopian tubes measures over two inches.The width of the cervix, at its junction with the body, measures oneinch. The uterus thus assumes a pyriform shape. The cavity of theuterus loses its triangular character, and assumes a more ovoid ap-pearance. The external orifice no longer forms a smooth transversedepression, but its edges, lacerated by childbirth, communicate theimpression of a rounded, puckered surface. AY hen a profile section is made through a perfectly healthy unim-pregnated uterus, its Avails are found in actual contac

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