Embryology

2. cells that will form all the cells that will be the final human
3. ___, embryonic disk, and yolk sac are connected by a short stalk to wall of uterus
5. ectodermal cells in dorsal midline thicken to form all structures of entire CNS and PNS
6. calculated from 1st day of mother's last period
9. cells that will form extraembryonic structures
11. gives rise to skin, nails, hair, nervous system, and sense organs
13. cells that can form all cell types in body
16. key component to growth and reproduction
18. reduction division process that results in formation of sperm cells and egg cells
19. interior fluid filled space
20. cells depressing on primitive streak
22. generates lining of body's major cavities like digestive canal and respiratory organs
24. fusion of the neural groove begins ___ and extends ___ at day 21 and is completed in day 25
26. cells that can develop into more than one cell type, but are more limited than pluripotent
27. bilaminar embryo forms the ___ embryo via gastrulation
28. 9 weeks to birth

1. period at 16 days where cells are continually produced by epiblast and migrate toward primitive streak
4. forms in middle of neural plate
7. gives rise to body's connective tissue structure such as bone, muscle, ligaments, vasculature
8. fusion of 2 pronuclei
10. defines body's axis
12. results in growth and development
14. cells that have capacity to develop into any cell type or tissues
15. zygote begins to divide by mitosis
17. give rise to dorsal root ganglion of spinal cord, ganglia of autonomic nervous system, and sensory ganglia ofo cranial nerves V, VII, IX, and X
21. until 8 weeks
23. formed from mesoderm, paired rectangular bumps of tissue; will eventuall develop into vertebrae, axial muscles, and skin
25. embryo that has migrated into uterus