An American text-book of obstetrics. For practitioners and students (1897) (14581051890)

Identifier: americantextbook00norr (find matches)

Title: An American text-book of obstetrics. For practitioners and students

Year: 1897 (1890s)

Authors: Norris, Richard C. (Richard Cooper), 1863-1937 Dickinson, Robert Latou, 1861-

Subjects: Obstetrics Obstetrics

Publisher: Philadelphia, W. B. Saunders

Contributing Library: Yale University, Cushing/Whitney Medical Library

Digitizing Sponsor: Open Knowledge Commons and Yale University, Cushing/Whitney Medical Library

Text Appearing Before Image:

hgradually rises around the egg until it is completely enclosed within the newenvelope formed by the reflected uterine tissue. In view of the fact that the mucosa of the uterus is discarded at the closeof labor, the thickened uterine lining is appropriately termed the decidua ; ofthis membrane three regions are recognized : the decidua rejlexa, or that por-tion which encloses the ovum by the reflected folds ; the decidua vera, or thatportion which constitutes the greater part of the general lining of the uterinecavity ; and the decidua serotina, or that portion of the uterine lining includedwithin the embryonic sac completed by the reflexa (Fig. 76; PI. 13). Thedecidua serotina derives especial significance from the fact that it contributesthe maternal part in the formation of the placenta. The changes affecting the maternal tissues consist primarily in proliferationof the epithelium and the glands, the latter becoming greatly enlarged both in RELATIONS OF FETUS AND DECIDUAL Plate 13.

Text Appearing After Image:

PHYSIOLOGY OF PREGNANCY. 87 size and in the number of the tubules, the increase particularly involvingtheir deeper parts. Subsequently the pressure exerted upon this hypertro-phied tissue by the rapidly growing embryo and its surrounding structuresinduces atrophy and degeneration, so that the outermost part of the thickeneduterine mucosa becomes the stratum compactum, and the middle part the stra-tum spongiosum (Fig. 77). The limited zone embracing the fundi of the tubularuterine glands remains unaffected, and, after the expulsion of the structures Decidua serotina(placenta). Chorion frondosunt.

Ein amerikanisches Lehrbuch der Geburtshilfe für Praktiker und Studenten 1897 Bücher, Zeitschriften und Leitfäden zur menschlichen Schwangerschaft Buchillustrationen medizinische Illustrationen Medizin Medizin Physiologie Geburtshilfe und Gynäkologie Lehrbücher hohe Auflösung Bilder aus dem Internetarchiv botanische Illustrationen Public Domain Anatomie Bilder

1897

Whitney Medical Library

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