Embryology — Placenta and Fetal Membranes
Embryology · Basic Sciences
How it begins
La placenta es el órgano de mayor complejidad y trascendencia del embarazo: mediaador del intercambio fisiológico entre la circulación materna y la fetal, fuente de hormonas esenciales para el mantenimiento del embarazo y barrera selectiva frente a patógenos e inmunógenos. Su desarrollo es un proceso progresivo que abarca desde la segunda semana hasta las 12-16 semanas cuando la placenta adquiere su morfología…
What it covers
- Development of Chorial Villi
- · The Three Generations of Villi
- · Microscopic Structure of Mature Villus (Term)
- The Trophoblast in Detail
- · Trophoblast Classification
- · Remodeling of the Spiral Arteries by EVT
- · Maternal Immunological Tolerance to Trophoblast
- Anatomy of the Mature Placenta
- · The Corial Plate (Fetal Face)
- · The Basal Plate (Maternal Face)
- The Placental Barrier
- · Placental Transfer Mechanisms
- Functions of the Placenta
- · Respiratory Exchange Function
- · Nutritional Function
- Endocrine Function of the Placenta
- Amnion and Amniotic Fluid
- · Amniotic Fluid — Production, Circulation and Composition
- · Volume and Composition of Amniotic Fluid
- Yolk Sac, Allantois and Chorioamniotic Membranes
- · The Secondary Yolk Sac — Evolution and Destiny
- · The Allantois — Evolution and the Median Umbilical Ligament
- · Chorioamniotic Fusion and Extraembryonic Coelom Obliteration
- The Umbilical Cord
- · Structure of the Normal Umbilical Cord
- The Decidua — Transformed Endometrium
- · Types of Decidua
- · Decidual Cells
- Fetoplacental Circulation
- · Fetal Blood Journey
- The Three Fetal Physiological Shunts
- Circulatory Changes at Birth
- · Post-Natal Anatomical Changes in Vascular Structures
- Placental Pathology
- Cord and Membrane Pathology
- · Amniotic Band Syndrome (ADAM)
- Rh Isoimmunization and TORCH Infections
- · Rh Isoimmunization — Feto-Neonatal Hemolytic Disease (NHFD)
- · TORCH Infections — Vertical Transplacental Transmission
- Integrated Summary
- · Chronology of Placental Development and Membranes
The complete study guide is in the app
This page summarizes the outline. The full interactive study guide —with high-yield diagrams, clinical tables, and board review cases— can be read inside Epistemis, completely offline and ad-free.
- Subject
- Embryology
- Category
- Basic Sciences
- Type
- Study Guide
- Sections
- 41
- Reviewed
- 2026-08-02