Physiology of Human Reproduction: Biography Before Birth

Fertilization; the uterus and its food supply for the fertilized egg cell; growth of the embryo; the foetal circulation and skeleton; the placenta; the developed embryo changes position preparatory to birth. Includes shots of a living embryo and shows, in a time-lapse eineradiograph extending over many weeks, the growth of a bone. (Age group: 12 plus.)