The principles and practice of obstetrics . Ovuiu of five weeks. I; E S T A T10N. cammed at the Bixth or eighth week d the ovum will be found projecting into the Kg. Membrana DECrnuA with ax Ovim of about Sbveb Weeks.—a. Tie-eidua Vera, *. Deoidna Reflexa. c. Chorion. </. Amnion, e. Cmbili-oaJ Cord. /. Embryo. <j. Membrana Deoidua, extending into the neckof tbo uterus. cavity of the decidua in a manner wry similar to thejectioo of tin heart into the pericardium. The ovumcontinuing to be developed, the decidua reflexa isbrought into contact with the decidua vera, with whichit unites
The principles and practice of obstetrics . Ovuiu of five weeks. I; E S T A T10N. cammed at the Bixth or eighth week d the ovum will be found projecting into the Kg. Membrana DECrnuA with ax Ovim of about Sbveb Weeks.—a. Tie-eidua Vera, *. Deoidna Reflexa. c. Chorion. </. Amnion, e. Cmbili-oaJ Cord. /. Embryo. <j. Membrana Deoidua, extending into the neckof tbo uterus. cavity of the decidua in a manner wry similar to thejectioo of tin heart into the pericardium. The ovumcontinuing to be developed, the decidua reflexa isbrought into contact with the decidua vera, with whichit unites most intimately, so that in a short time no lineof demarcation is evident, the two membranes appear-ing as one, lining the uterine cavity. The ovum thusis again united to the mothers tissues. The villi of thechorion, being completely covered with the laminae ofthe decidua, become the only media of connection be-tween the embryo and the maternal tissues. Those who represent the membrana decidua as asimple development of the mucous membrane contendthat the ovum passes into the uterine cavity, where itis arrested by the folds of the mucous membrane. Atthis place th
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Keywords: ., boo, bookcentury1800, booksubjectobstetrics, booksubjectpregnancy
