Rotunda midwifery for nurses and midwives / by G.T. Wrench.

  • Guy T. Wrench
Date:
1908
Catalogue details

Licence: In copyright

Credit: Rotunda midwifery for nurses and midwives / by G.T. Wrench. Source: Wellcome Collection.

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    embryo or foetus floats in the liquor amnii and no better means of guarding the delicate life against injury could be imagined. The hquor amnii itself is enclosed by the amnion {see diagram, p. 10). The amnion lines the inner surface of the chorion. The two together are known as the membranes, and with the liquor amnii they are known as the bag of waters. We have now seen how conception takes place, how the female sexual organs are adapted for this ; how the ovum grows, how it gets nourishment, how it gets rid of its waste products, and how it is protected from injury by the liquor amnii. DEFINITION OF PRINCIPAL TERMS USED Conception.—The union of male and female elements; also called fertilization. Spermatozoon.—The male element. Ovum.—The egg or female element. Ovaries.—The organs which contain the ova. The Fallopian Tubes.—The tubes into the trumpet mouths of which the ova drop and along which they pass to the womb. Fertilized Ovum.—The ovum which, owing to union with a spermatozoon, is capable of growth. It grows from the tiny egg to the full-term baby; the placenta and membranes, for all these, except the maternal sinuses of the placenta, are developed from the ovum and therefore collectively are still called the ovum. The Uterus.—The organ in wliich the fertilized ovum is nourished. The Body of the Uterus.—The upper two-thirds of the uterus, which expands and grows to allow of the growth of the fertilized ovum. The Neck of the Uterus.—The lower one-third of the uterus, which does not grow or expand. Its canal, the cervical canal, keeps closed until childbirth. Internal Os.—The mouth of the cervical canal that opens into the uterine cavity. It is kept closed during
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