Across
- 3. connects the baby to the placenta
- 6. a fertilized egg, the first cell of a baby
- 8. a set of cells that have begun to differentiate
- 10. a ball of unspecialized cells, the result of cleavage
- 11. union of egg & sperm
- 12. the attaching of the blastula to endometrium
- 13. a shock absorber inside the amniotic sac
- 14. the organ of diffusion between mom and baby
Down
- 1. the name for a baby in the first 8 weeks of its development
- 2. a hollow ball of cells, comes after morula
- 4. the rapid mitosis undergone by a zygote
- 5. the name for a baby after week 9 of its development until birth
- 7. the time period from conception until birth
- 9. a protective sac for the baby