CHAPTER III. DEVELOPMENT OF THE OVUM, EMBRYO, FETUS, PLACENTA, CORD
AND MEMBRANES. The Ovum. The Spermatozoon. Fertilization. Heredity. Sex-determination. Most Favorable Age for Motherhood. The Morula. Growth in the Uterus. The Decidua. Ectoderm. Mesoderm. Entoderm. The Chorion and Placenta. The Amnion. The Umbilical Cord. The Fetus. Growth by Months. Factors Influencing the Size of Child. Multiple Pregnancy. Extra-uterine Pregnancy.