Spine Embryology

5. The ventral horn motor neurons develop here and extend axons out of the spinal cord to innervate developing skeletal muscle
8. The progenitor cells that make up the precursors to neural tissues in the neural plate are called ___________ cells
10. mater relating to an eight legged creature
11. An intersecting network of nerves
12. Embryonic layer that forms muscle and bone

1. Improper closure of the neuropores can result in this neural tube defect
2. tough mother
3. Embryonic layer that will form the cells lining the digestive and respiratory tracts
4. A cartilaginous skeletal rod supporting the body in all embryonic and some adult chordate animals
6. The sensory dorsal horn develops there and receives axons from the sensory structures outside the spinal cord
7. Represents the area of skin that is mainly supplied by a single spinal nerve
9. Embryonic layer that eventually forms the skin and neural tissues