Across
- 2. Early developmental process in which an embryo transforms from a one-dimensional layer of epithelial cells
- 5. band of thickened epiblast that first appears at the caudal end of the embryo and grows cranially
- 7. Extracellular matrix that surrounds the plasma membrane of mammalian oocytes
- 8. The source of embryonic stem cells
- 10. A cluster of dividing cells made by a fertilized egg
- 12. Pluripotent primary lineage that will form the definitive germ layers in a complex process of differentiation
- 13. Also called cleavage cavity
- 15. Flexible rodlike structure of mesodermal cells
Down
- 1. Series of mitotic divisions whereby the enormous volume of egg cytoplasm is divided into numerous smaller, nucleated cells.
- 3. Folding process in vertebrate embryos, which includes the transformation of the neural plate into the neural tube
- 4. Microscopic ball
- 6. A thin layer of cells that helps a developing embryo attach to the wall of the uterus
- 9. A layer of cells in fish and amniote embryos
- 11. The stage in early animal embryonic development
- 14. Development from the time of fertilization until dormancy occurs