A System of midwifery : including the diseases of pregnancy and the puerperal state . Sectioi f tin plaeonta in their direction, and with numerous anastomoses. Some have bud- posed that the connection between these veins and arteries was of the nature of ;i simple capillary circulation; but the researches of Beid,Weber, and Goodsir, have shown that their connection is of a specialcharacter, and offer- the strongest possible contrast to a capillar! sys-tem. According to them, the blood i> conducted by the curling arte-ries into large irregular cells or rinun 8, the w alls ^\ which are thin,
A System of midwifery : including the diseases of pregnancy and the puerperal state . Sectioi f tin plaeonta in their direction, and with numerous anastomoses. Some have bud- posed that the connection between these veins and arteries was of the nature of ;i simple capillary circulation; but the researches of Beid,Weber, and Goodsir, have shown that their connection is of a specialcharacter, and offer- the strongest possible contrast to a capillar! sys-tem. According to them, the blood i> conducted by the curling arte-ries into large irregular cells or rinun 8, the w alls ^\ which are thin, andcomposed of tin lining membrane o\ the maternal vascular system only. These Binuses communicate freely with each other, and from them the blond is returned to the uterus through the veins which are seen t<» pass through the utero-placental tissue. In fact,a considerable ns DEVELOPMENT OF THE OVUM. [chap. portion of the bulk of the placenta, when the organ is replete withblood, is said to be composed of a great venous cavity, which dips sodeeply into the chorion as to attain
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectobstetrics, bookyear1
