Chapter 22

3. The transient section of the dorsal neural tube that gives rise to peripheral sensory neurons and glia.
5. These cells form bicycle-like spokes to aid in neural migration.
6. What determines whether cells in the dorsal ectoderm give rise to epidermal or neural cells?
8. The division of an organism into repeating units, specifically on the anterior/posterior axis.
13. This section of the developing embryo gives rise to the pons and cerebellum.
15. Which embryonic germ layer gives rise to the lining of the organs?
16. This section of the developing embryo gives rise to the medulla.
17. This section of the developing embryo gives rise to the midbrain.
19. In this stage of embryonic development, the cells migrate to create three distinct layers.
20. Which embryonic germ layer gives rise to the organs?

1. These formations will later become eyes.
2. In this stage of embryonic development, a folding process creates a tube that is crucial in future development of the brain.
4. These genes influence the segmentation of human embryos.
7. This section of the developing embryo gives rise to the thalamus and hypothalamus.
9. The transient section of the coral neural tube that gives rise to interneurons in the spine and hindbrain.
10. This section of the developing embryo gives rise to the cerebrum.
11. These genes influence the segmentation of Drosophila.
12. Cells These cells may become any other type of cell, depending on input from their surroundings.
14. The sharp bend in the neural tube that balloons out into the prosencephalon.
18. Which embryonic germ layer gives rise to the neural tube?