Umbilical cord placenta. Animals that lay eggs seem to have a false umbilical-cord that attaches the embryo and yolk together in much the same way. The term "umbilical cord" or just "umbilical" has also come to be used for other cords with similar functions, such as the hose connecting surface-supplied divers to their surface supply of air and/or heating, or space-suited astronauts to their spacecraft. Engineers sometimes use the term to describe a complex or critical cable connecting a component, especially when composed of bundles of conductors of different colors, thickness and types, terminating in a single multi-contact disconnect. In multiple American
Social uterus Social uterus Social uterus is a developmental concept in family therapy for psychosomatic disorders. Social uterus as an integrative model of family development was invented by Vladislav Chvála and Ludmila Trapková in 1990's. The metaphor of a social uterus was formed by comparing the biological function of the uterus and the maturation of the foetus inside it from conception to childbirth with the changes in the family from the birth of the child up to its separation around the age of 18. The metaphor translates facts well known from the biology of reproduction to the social level. In the "social