Dev't Bio

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