Embryology — Bilaminar Disc, Gastrulation and Trilaminar Disc

Embryology · Basic Sciences

How it begins

La segunda semana del desarrollo embrionario es, quizás, la más rica en transformaciones simultáneas. Se denomina coloquialmente la "semana de los dos" : se forman dos capas en el disco germinativo (epiblasto e hipoblasto), dos cavidades (amniótica y el saco vitelino), dos capas del trofoblasto (sincitio y cito-), y dos capas del mesodermo extraembrionario (somática y esplácnica). Para entender el disco bilaminar,…

What it covers

1. Blastocyst, Implantation and Decidual Reaction
2. · From the Zygote to the Blastocyst — Chronology
3. · The Decidual Reaction of the Endometrium
4. The Bilaminar Disc
5. · Epiblast and Hypoblast — Origin, Nature and Destiny
6. · Formation of the Amniotic Cavity
7. · Formation of the Primitive and Secondary Yolk Sac
8. · The Anterior Visceral Endoderm (AVE) — The "GPS" of the Anteroposterior Axis
9. Trophoblast and Primitive Uteroplacental Circulation
10. Gastrulation — The Primitive Line
11. · The Primitive Line — Anatomy and Function
12. · Primitive Line Regression
13. Molecular Signaling of Gastrulation
14. The Notochord
15. · Notochordal Process Formation — Detailed Steps
16. The Trilaminar Disc — The Three Germinal Leaves
17. · Special Trilaminar Disc Membranes
18. Mesoderm Differentiation
19. · The Intraembryonic Coelom
20. Somitogenesis — The Developmental Clock
21. · Chronology of Somitogenesis
22. · The Segmentation Clock
23. · Somite Differentiation
24. Primary Neurulation
25. · Neural Plate Induction — The First Act of Neurulation
26. · Steps of Primary Neurulation
27. Neural Crest Cells
28. · Induction and Specification of CCN
29. · CCN Migration Routes
30. Derivatives of the Three Germinal Leaves
31. Fundamental Clinical Correlations
32. · Twinship — Types and Embryopathology
33. · Persistent Primitive Line — Sacrococcygeal Teratoma
34. · Caudal Regression Syndrome and Sirenomelia
35. Integrated Chronological Summary