Characterization of the Developmental Stages

  • Kurt Benirschke
  • Peter Kaufmann


This chapter is a synopsis and presents brief descriptions of the average data of placenta and membranes throughout the single stages of placental development. Embryological data concerning embryo and fetus are given only insofar as they are of importance for the definition of the stage. It is not the intention of this chapter to compare data of various sources on a scientific level but, rather, to present data that are directly applicable for the pathological and histological examination of human material. For this purpose, all data have been extrapolated and were standardized where necessary.


Placental Weight Placental Villus Intervillous Space Chorionic Plate Embryonic Disk 
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Copyright information

© Springer Science+Business Media New York 1990

Authors and Affiliations

  • Kurt Benirschke
    • 1
    • 2
  • Peter Kaufmann
    • 3
  1. 1.Pathology and Reproductive MedicineUniversity of CaliforniaSan DiegoUSA
  2. 2.University Medical CenterSan DiegoUSA
  3. 3.Institut für Anatomie der Medizinischen Fakultät, Rheinisch-Westfälische TechnischeHochschule AachenAachenGermany

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