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Figure 17 | Frontiers in Zoology

Figure 17

From: Invertebrate neurophylogeny: suggested terms and definitions for a neuroanatomical glossary

Figure 17

Schematic representation of segmental neuroblasts and their progeny in insects and malacostracan crustaceans in cross section. A. In insects, the neuroblasts detach from the ventral embryonic ectodermal layer and migrate into the interior of the embryo in dorsal direction. After this process they produce the ganglion mother cells which in turn divide to form ganglion cells (i.e., neurons or glia). B. In malacostracan crustaceans, the neuroblasts remain in the ectoderm, but the production of ganglion mother cells and ganglion cells shows the same pattern as in insects. Abbreviations: e = ectoderm; gac = ganglion cells; gmc = ganglion mother cells; nb = neuroblast. Modified from [142], with permission of the Royal Society in London.

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