The morphology and ultrastructure of common inhibitory motor neurones in the thorax of the locust

摘要: ePDFPDF PDF Tools Share Abstract The morphologies of three common inhibitory motor neurones which innervate muscles a hind leg and the homologous in middle are described relation to known commissures, tracts, areas neuropile their ganglia. The were stained individually by intracellular injection cobalt, ultra‐structure inhibitor 1 (CI1) metathoracic ganglion was revealed herseradish peroxidase. Homologous meso% ganglia have similar shapes. CI1 has axons nerves 3, 4, 5, but inhibitors 2 3 (CI2, CI3) only single axon nerve 5. They nevertheless all share many features common. All large (60 70 μm diameter) cell bodies ventral cortex near midline, well separated from those excitatory neurones. Their primary neurites run dorsally laterally send fine branches into dorsal lateral neuropile, some medially. None enter neuropile. CI2 small branch that arises close body arborises on either side midline. When examined with electron microscope, not found make any output synapses, even though its varicose end bulbous swellings. These seen be packed mitochondria vesicles. Input synapses tend grouped together secondary and, more especially, finer spines. majority processes presynaptic contain round agranular