Biological Sciences 330, Smith College | Research in Cellular NeurophysiologyAnatomy of the Crayfish Nervous System |
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Classic drawingsGeneral anatomy of the crayfish nervous system. Source: Cattaert and LeRay (2001) Adaptive motor control in crayfish. Progress in Neurobiology 63: 199-240. Crayfish brain (Retzius, 1890) Source: Nassel and Elofsson, in Gupta, 1987, Arthropod Brain (Wiley). Diagram of lobes in crayfish brain (Helm, 1928) Source: Nassel and Elofsson, in Gupta, 1987, Arthropod Brain (Wiley). Third abdominal ganglion stained with methylene blue (Retzius, 1890) Source: Bullock and Horridge, 1965, Structure and Function in the Nervous System of Invertebrates (Freeman). |
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Reference: Mulloney, B., T. Naranzogt and W.M. Hall (2003) Architectonics of crayfish ganglia. Microsc. Res. Tech. 60: 253-265. We thank Professor Brian Mulloney, University of California at Davis, for permission to include reformatted versions of his videos and figures from his papers. |
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Stained swimmeret motoneuronsSeveral cobalt-stained motoneurons in a first root, showing the position of their cell bodies near the base of the nerve and the branching of their processes in the lateral neuropil. Source: Sherff, C.M., B. Mulloney (1997) Passive properties of swimmeret motor neurons. J. Neurophysiol. 78:92-102. Heavily stained cobalt
backfills of the first root on the left and right
sides of a third abdominal ganglion. A cobalt backfill of a first root in which most of the axons in the nerve filled well. (Mulloney & Hall 2000, Fig. 3) Another backfill of a first root in which only a few axons filled. (Mulloney & Hall 2000, Fig. 3) Backfill of the posterior branch of a first root, showing the position of power stroke motoneurons in the ganglion. (Mulloney & Hall 2000, Fig. 4) Backfill of the anterior branch of a first root, showing the position of return stroke motoneurons in the ganglion. (Mulloney & Hall 2000, Fig. 4) |
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© 2003 by Richard F. Olivo. Permission is granted to non-profit educational institutions to reproduce or adapt this Web page for internal use provided that the original source and copyright are acknowledged. |