A nurse's handbook of obstetrics, for use in training-schools . ETRICS. a delicate pinkish hue in blondes and a darker rose-color inbrunettes. Under the influence of gestation the areola becomesdarker in shade, and this pigmentation which is more markedin brunettes than in blondes, constitutes, in many cases, a valu-able sign of pregnancy (see Figs. 31 and 36). (c) The nipple,a large conical papilla projecting from the centre of the areolaand having at its summit the openings of the milk ducts. IV Ovulation and Menstruation As stated in the previous chapter, the ovaries contain in theirsubstan
A nurse's handbook of obstetrics, for use in training-schools . ETRICS. a delicate pinkish hue in blondes and a darker rose-color inbrunettes. Under the influence of gestation the areola becomesdarker in shade, and this pigmentation which is more markedin brunettes than in blondes, constitutes, in many cases, a valu-able sign of pregnancy (see Figs. 31 and 36). (c) The nipple,a large conical papilla projecting from the centre of the areolaand having at its summit the openings of the milk ducts. IV Ovulation and Menstruation As stated in the previous chapter, the ovaries contain in theirsubstance, at birth, a great number (about seventy thousand) ofundeveloped ova or eggs, and it is unnecessary to say thatthese ova are microscopical in size. Beginning, in this climate, at about the thirteenth year ofage and occurring about once a month, one of these ova enlargesand approaches the surface of the ovary. This enlarged ovum,lying directly under the surface of the ovary, constitutes what isknown as the Graafian follicle (Fig. 15), and projects slightly,. Fig. 15.—Longitudinal section through ovary of a woman twenty-two days after the lastmenstruation. (Leopold.) , mature Graafian follicle; pr., most prominent point offollicle, where the rupture may be expected. like a small pimple. The Graafian follicle then becomes thinnedat one point, where it soon bursts and allows the ovum to escapeinto the Fallopian tube (Fig. 16). 37 38 A NURSES HANDBOOK OF OBSTETRICS. Once within the Fallopian tube, the ovum makes its way intothe uterus, and, if unimpregnated by the male element, it losesits vitality in a few days and is cast off with the menstrual flow.
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Keywords: ., bookcentury1900, bookdecade1910, bookidnur, booksubjectobstetrics
