Synaptic connections of the Nervus connectivus in the frontal ganglion of Periplaneta americana L. (Insecta)

1 December 1979

journal article
Published by Springer Nature in Cell and tissue research

Vol. 204 (1)
https://doi.org/10.1007/bf00235172

Abstract

The course of the Nervus connectivus (N.c.), its branches, and synaptic connections within the frontal ganglion (FG) were investigated electron microscopically after cobalt iontophoresis of the N.c. The subsequent treatment of ultrathin sections with Timm's method was found to be very suitable for identifying the smallest branches. In the neuropil, fibers of the N.c. form Gray-I-type synapses, but also dyads are abundant, whereby the N.c. fibers occur exclusively in postsynaptic position with neurosecretory fibers. The possible role of these relationships is discussed.

Keywords

NERVUS CONNECTIVUS
PERIPLANETA
SYNAPTIC CONTACTS
IONTOPHORESIS
ELECTRON MICROSCOPY

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