1. General Embryology
    2. 1. Introduction to Molecular Regulation and Signaling
    2. Gametogenesis: Conversion of Germ Cells into Male and Female Gametes
    3. First Week of Development: Ovulation to Implantation
    4. Second Week of Development: Bilaminar Germ Disc
    5. Third Week of Development: Trilaminar Germ Disc
    6. Third to Eighth Weeks: The Embryonic Period
    7. The Gut Tube and the Body Cavities
    8. Third Month to Birth: The Fetus and Placenta
    9. Birth Defects and Prenatal Diagnosis
  2. Systems-Based Embryology
    3. 10. The Axial Skeleton
    11. Muscular System
    12. Limbs
    13. Cardiovascular System
    14. Respiratory System
    15. Digestive System
    16. Urogenital System
    17. Head and Neck
    18. Central Nervous System
    19. Ear
    20. Eye
    21. Integumentary System
General Embryology
2. Gametogenesis: Conversion of Germ Cells into Male and Female Gametes
PRIMORDIAL GERM CELLS
THE CHROMOSOME THEORY OF INHERITANCE
MORPHOLOGICAL CHANGES DURING MATURATION OF THE GAMETES
Gametogenesis
Cleavage
Morula
Blastula
Gastrula