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

Guy T. Wrench

Date:: 1908

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

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$into the water in the water culture of jslants already mentioned. Ill this Wciy through the jilaceiita the footus, as the child in the womb is called after the third lunar-month, gets oxygen and nourishment from the mother's blood and gives up its waste products. The heart of the foetus pumps the foetal blood along the two arteries of the umbilical cord to the placenta. This blood returns from the placenta to the foetal circulation by the umbilical veins which run in the umbihcal cord. The description of the placenta will be left until we Fig. 3.—Ditigram of foetus and placenta. consider the examination of the afterbirth in the conduc- tion of normal labour. Amnion {Amnion—Greek, a bowl in which the blood of sacrificial victims was caught).—On p. 9, we said that two membranes are formed which surround the foetus: the outer the chorion, and the inner the amnion. We have seen that the chorion is the membrane that feeds the embryo. {Embruon—Greek, the fruit of the womb in the first three months.) ^Wliat is the object of the amnion 1 The growing embryo is very soft and dehcate and could be readily injured were it squeezed by the uterus in which it lies. Now as a matter of fact the uterus does get smaller or contract and then relax again about once every twenty minutes during pregnancy. To prevent the foetus being injured, it is surrounded by water, and this water is known as the liquor amnii. The$

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

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