1. Slides: Implantation and Embryonic & Fetal Development

2. 1 pronuclei Zona

3. 2 Polar Body Blastomere

4. 3 Zona Blastomeres

5. 4 Zona Blastomeres early blastocyst ‘hatching’ from zona Zona degrading

6. 5 Inner Cell Mass Trophoblast Blastocyst

7. 6 uterine gland endometrium implanting conceptus

8. 7 syncytio- trophoblast lacunae embryonic disc

9. 8 lacunar networkamnionembryonic disc yolk sac cytotrophoblast

10. 9 lacunar networkamnionembryonic disc yolk sac chorion

11. 10 intervillous space = lacunar network connecting stalkembryonic disc yolk sac chorionchorionic villi

12. 11 epiblast mesoderm endoderm The Embryonic Disc

13. 12 primitive streak connecting stalk embryonic disc yolk sac chorion

14. 13 amnion ectoderm endodermnotochord mesoderm

15. 14 brain connecting stalk umbilical cord somites yolk sacchorion heart pharynx

16. 15 umbilical cord amnion forebrain yolk sac heart pharyngeal arches somites

17. 16 apical ectodermal ridge (AER) Limb bud limb mesoderm

18. 17 umbilical cord amnion yolk sacchorionic villi

19. 18 amnion umbilical cord umbilical hernia: intestines Crown-Rump length 30 mm = 1.25 inch

20. 19 Placenta = villous chorionamnionsmooth chorion Crown-Rump length: 93 mm = 3.5 inches