From Big Medical Encyclopedia

AFTERBIRTH — the set of extraembryonic parts of fetal egg providing a two-way communication between a fruit and an organism of mother.

The afterbirth consists from placentae (see), fetal membranes (see) and umbilical cords (see), connected in the anatomic and functional relations and performing the most difficult functions during pregnancy and childbirth. After the birth of a fruit functional activity of an afterbirth dies away and it is allocated from a cavity of the uterus, from here and the name «afterbirth». P.'s allocation is preceded by peeling of a placenta and fetal membranes (see. Afterbirth period ). The been born P. is carefully studied, paying special attention to an integrity of a placenta; it is weighed, measured, establish existence or lack of additional segments, petrifikat, dystrophic changes, etc. On localization of a rupture of fetal membranes reveal an arrangement of a placenta, napr if fetal membranes are broken off at edge of a placenta, it was attached near an internal uterine pharynx if it is far from edge — the placenta was located highly in a body or an uterine fundus. P.'s survey at polycarpous pregnancy gives the chance to establish what twins were born, one - or biovular. Examine also an umbilical cord, define features of its structure: length, thickness (normal, lean, edematous), color of a vartonovy studena, existence of nodes (true, false, etc.), the place of an attachment of an umbilical cord to a placenta (central, side, regional, the shell).