1. Examination of the Placenta.- 2. Macroscopic Features of the Delivered Placenta.- 3. Microscopic Survey.- 4. Placental Types.- 5. Early Development of the Human Placenta.- 6. Basic Structure of the Villous Trees.- 7. Architecture of Normal Villous Trees.- 8. Characterization of the Developmental Stages.- 9. Nonvillous Parts and Trophoblast Invasion.- 10. Involution of Implantation Site and Retained Placenta.- 11. Anatomy and Pathology of the Placental Membranes.- 12. Anatomy and Pathology of the Umbilical Cord and Major Fetal Vessels.- 13. Placental Shape Aberrations.- 14. Histopathological Approach to Villous Alterations.- 15. Classification of Villous Maldevelopment.- 16. Erythroblastosis Fetalis and Hydrops Fetalis.- 17. Transplacental Hemorrhage, Cell Transfer, Trauma.- 18. Fetal Storage Disorders.- 19. Maternal Diseases Complicating Pregnancy: Diabetes, Tumors, Preeclampsia, Lupus Anticoagulant.- 20. Infectious Diseases.- 21. Abortion, Placentas of Trisomies, and Immunological Considerations of Recurrent Reproductive Failure.- 22. Molar Pregnancies.- 23. Trophoblastic Neoplasm.- 24. Benign Tumors and Chorangiosis.- 25. Multiple Pregnancy.- 26. Legal Considerations.- 27. Glossary.- 28. Normative Values and Tables.