[Neuronal organization of ganglia in the lumbar region of the cat sympathetic chain].
Neuronal organization of the isolated III--VI ganglia in the lumbar sympathetic chain of the cat was studied by means of intracellular recording. Most of the ganglionic neurons (66%) receive synaptic inputs simultaneously from sympathetic B1-, B2- and C-preganglionic fibres (conduction velocity 12.0 +/- 0.7; 4.4 +/- 0.3 and 1.0 +/- 0.1 m/s respectively). The rest of neurons are activated only by fast-conducting B1- and B2-fibres (24%) or only by slow-conducting C-fibres (10%). The main preganglionic input to the ganglionic neurons comes through the white rami of the rostral segments, the less effective inputs--through the other ones. A part of neurons receive preganglionic C-fibres coming into the ganglia through the grey rami.
D000818:Animals; D001339:Autonomic Fibers, Preganglionic / Q000502:physiology; D002415:Cats; D004558:Electric Stimulation; D004594:Electrophysiology; D005725:Ganglia, Autonomic / Q000502:physiology*; D008564:Membrane Potentials; D013570:Synaptic Membranes / Q000502:physiology
Neĭronnaia organizatsiia gangliev poiasnichnogo otdela simpaticheskoĭ tsepochki koshki.