File:A system of obstetrics (1888) (14592481297).jpg

Identifier: systemri01hirs (find matches)
Title: A system of obstetrics
Year: 1888 (1880s)
Authors: Hirst, Barton Cooke, 1861-1935
Subjects: Obstetrics
Publisher: Philadelphia, Lea brothers & co.
Contributing Library: Yale University, Cushing/Whitney Medical Library
Digitizing Sponsor: Open Knowledge Commons and Yale University, Cushing/Whitney Medical Library

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s Fritsch terms it, without sphincter func-tions. In a median sagittal section of the uterus at term three distinct por-tions are recognized: 1, corpus uteri; 2, lower uterine segment; 3,mucous membrane. 1. The corpus uteri is differentiated from thelower uterine segment by the thickness of its walls, the arrangementof its muscular elements in accord with Luschkas investigations,noticeably firmer consistence, the decidua large in amount and firmlyadherent to the mucosa. 2. The lower uterine segment is more or lesssensible in the cadaver according as the egg or presenting part is moreor less descended into the pelvic cavity, and according as it has exertedits influence for a longer or shorter period upon the already-formedlower uterine segment. It is differentiated from the corpus uteri by thethinness of its walls, the arrangement of its muscular elements, remark-ably .-otter consistence, the decidua small in amount and loosely adhe- 336 THE PHYSIOLOGY OF PREGNANCY. Fig. 201. Fig. 202.
Text Appearing After Image:
Median Sagittal Sections of the Uterus at Term (Braune). rent. 3. The mucous membrane of the cervix has distinct boundariesabove and below, and remains intact for the greater part until term.Bandls1 views have since undergone important modifications, especially 1 Vortrag. a. d. Miinchener Naturforschervers, 1877 ; Arch. f. Gj/n., Bd. xii.; Centralb. f.Gi/n., 1877, p. 177; Vortr. a. d. Naturforschervers in Baden-Baden, 1879; Arch. f. Gyn.,Bd. xv. CHANGES IN THE GENITALIA, ETC. 337 with reference to the cervical mucosa, as the result of the microscopicalinvestigations of Kiistner and Marchand. His recent utterances areto the effect that in first labors the mucous membrane of the dilatedportion of the cervix—the lower uterine segment—becomes torn orstripped off, and subsequently a new membrane is formed upon thedenuded surface not distinguishable from that of the corpus, which infuture pregnancies is capable of forming a decidua. The differentiationbetween corpus and cervix—lower u

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