caa a22 4500 469082909 CHVBK 20180323132955.0 cr unu---uuuuu 170328e19920201xx s 000 0 eng 10.1007/BF00302979 doi (NATIONALLICENCE)springer-10.1007/BF00302979 Complex innervation of three neck muscles by motor and dorsal unpaired median neurons in crickets [Elektronische Daten] [Marlene Bartos, H. Honegger] Summary: In the crickets, Gryllus campestris and Gryllus bimaculatus, the innervation of the dorso-ventral neck muscles M62, M57, and M59 was examined using cobalt staining via peripheral nerves and electrophysiological methods. M62 and M57 are each innervated by two motoneurons in the suboesophageal ganglion. The four motoneurons project into the median nerve to bifurcate into the transverse nerves of both sides. M62 and M57 are the only neck muscles innervated via this route. These bifurcating axon-projections are identical to those of the spiracular motoneurons in the prothoracic ganglion innervating the opener and closer muscle of the first thoracic spiracle in the cricket. The morphology of their branching pattern is described. The neck muscle M57 and the opener muscle of the first thoracic spiracle are additionally innervated by one mesothoracic motoneuron each, with similar morphology. These results suggest, that in crickets, the neck muscles M57 and M62 are homologous to spiracular muscles in the thoracic segments. The two neck muscles M62 and M59 (the posterior neighbour of M57) receive projections from a prothoracic dorsal unpaired median (DUM) neuron that also innervates dorsal-longitudinal neck muscles but not M57. In addition, one or two mesothoracic DUM neurons send axon collaterals intersegmentally to M59. This is the first demonstration of the innervation of neck muscles by DUM neurons. Springer-Verlag, 1992 Muscle, insect nationallicence Nervous system, central nationallicence Motoneurons nationallicence DUM neuron nationallicence Gryllus campestris (Insecta) nationallicence Gryllus bimaculatus (Insecta) nationallicence Bartos Marlene Institut für Zoologie, Technische Universität München, Lichtenbergstrasse 4, W-8046, Garching, Germany aut Honegger H. Institut für Zoologie, Technische Universität München, Lichtenbergstrasse 4, W-8046, Garching, Germany aut Cell and Tissue Research Springer-Verlag 267/2(1992-02-01), 399-406 0302-766X 267:2<399 1992 267 441 https://doi.org/10.1007/BF00302979 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00302979 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Bartos Marlene Institut für Zoologie, Technische Universität München, Lichtenbergstrasse 4, W-8046, Garching, Germany aut NATIONALLICENCE 700 1- Honegger H. Institut für Zoologie, Technische Universität München, Lichtenbergstrasse 4, W-8046, Garching, Germany aut NATIONALLICENCE 773 0- Cell and Tissue Research Springer-Verlag 267/2(1992-02-01), 399-406 0302-766X 267:2<399 1992 267 441 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer