Common and Specific Inhibitory Motor Neurons Innervate the Intersegmental Muscles in the Locust Thorax.
From: Institut für Biologie II, Rheinisch-Westfälische Technische Hochschule Aachen, Kopernikusstrasse 16, D-52074 Aachen, Germany.
The Journal of experimental biology
- Publish Date: May 2006
- ISSN: 0022-0949
- Volume: 209
- Issue: Pt 10
- Pages: 1827-36
- Medium: Print
- Language: English
- Citation (JAMA): Bräunig Peter, Schmäh Michael, Wolf Harald, et al. Common and Specific Inhibitory Motor Neurons Innervate the Intersegmental Muscles in the Locust Thorax.. J. Exp. Biol. May 2006;209:1827-36
Abstract
The inhibitory innervation of the intersegmental (body wall) muscles between the first and the second thoracic segment of the migratory locust, Locusta migratoria, was investigated using neuroanatomical, immunocytochemical and electrophysiological techniques. Three neurons located in the prothoracic ganglion show GABA-like immunoreactivity and project into the intersegmental nerve. Two are common inhibitors. One of those innervates the oblique intersegmental muscle M59 and two dorsal longitudinal muscles (M81 and M82). The second common inhibitor also innervates M59 and the ventral longitudinal muscle M60. The third neuron innervates M60 exclusively and, for that reason, has to be regarded as the first specific inhibitor ever observed in insect neuromuscular assemblies. According to their innervation pattern, we term these neurons CI(59/60), CI(59/81/82), and SI(60). CI(59/81/82) and CI(59/60) appear to be segmentally homologous to CI(a) and CI(b) neurons, respectively, in the other body segments.
Mesh Headings (Keywords): Animals, Grasshoppers, Motor Neurons, Muscle, Skeletal
Check for Full Text / PubMed Unique Identifier (PMID): 16651549
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