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
7. The Gut Tube and the Body Cavities
A TUBE ON TOP OF A TUBE
FORMATION OF THE BODY CAVITY
SEROUS MEMBRANES
DIAPHRAGM AND THORACIC CAVITY
FORMATION OF THE DIAPHRAGM