Читать книгу The Natural Food of Man. Being an attempt to prove from comparative anatomy, physiology, chemistry and hygiene, that the original, best and natural diet of man is fruit and nuts онлайн

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“From the commencement of gestation, the superficial substance of the mucous membrane of the human uterus undergoes a rapid growth and textural modification, becoming converted into the so-called decidua. While the ovum is yet small, this decidua is departable into three portions: The decidua vera, which lines the general cavity of the uterus; the decidua reflexa, which immediately invests the ovum; and the decidua serotina, a layer of especial thickness, developed in contiguity with those chorionic villi which persist and become converted into the fœtal placenta. The decidua reflexa may be regarded as an outgrowth of the decidua vera the decidua serotina as a special development of a part of the decidua vera. At first, the villi of the chorion are loosely implanted into corresponding impressions of the decidua; but, eventually, the chorionic part of the placenta becomes closely united with and bound to the uterine decidua, so that the fœtal and maternal structures form one inseparable mass.”