A nurse's handbook of obstetrics, for use in training-schools . Fig. 2i.—Fetal surface of the placenta. (Garrigues.) The filmy membrane about thecircumference is the ruptured amniotic Fig. 22,—Maternal surface of the placenta. (Garrigues.) 5o A NURSES HANDBOOK OF OBSTETRICS. which are twisted upon each other, and these are protected bya soft, transparent, bluish-white, gelatinous substance called Whartons jelly. During the early months of pregnancy the foetus, or em-bryo, as it is usually called, bears no resemblance whateverto the human form. At the end of four weeks the ovum () i
A nurse's handbook of obstetrics, for use in training-schools . Fig. 2i.—Fetal surface of the placenta. (Garrigues.) The filmy membrane about thecircumference is the ruptured amniotic Fig. 22,—Maternal surface of the placenta. (Garrigues.) 5o A NURSES HANDBOOK OF OBSTETRICS. which are twisted upon each other, and these are protected bya soft, transparent, bluish-white, gelatinous substance called Whartons jelly. During the early months of pregnancy the foetus, or em-bryo, as it is usually called, bears no resemblance whateverto the human form. At the end of four weeks the ovum () is merely a spongy-looking sphere containing a small,curved, gelatinous mass, with no evidence of head or extremities(Fig. 24), and if an abortion occurs at this time it is almostinvariably lost in the discharge of blood. By the end of the third month it has increased considerablyin size, being about four inches in length and weighing about
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