Skip to main content
SpringerLink
Log in

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

An electron microscopic and iontophoretic study

  • Published:
Cell and Tissue Research Aims and scope Submit manuscript

Summary

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.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  • Gundel, M., Penzlin, H.: The neuronal connections of the frontal ganglion of the cockroach Periplaneta americana. A histological and iontophoretical study. Cell Tissue Res. 193, 353–371 (1978)

    Google Scholar 

  • Hertel, W., Koch, J., Penzlin, H.: Elektrophysiologische Untersuchungen am Frontalganglion bei Periplaneta americana L. J. Insect. Physiol. 24, 721–735 (1978)

    Google Scholar 

  • Rademakers, L.H.P.M.: Identification of a secretomotor centre in the brain of Locusta migratoria, controlling the secretory activity of the adipokinetic hormone producing cells in the corpus cardiacum. Cell Tissue Res. 184, 381–395 (1977)

    Google Scholar 

  • Timm, F.: Zur Histochemie der Schwermetalle — Das Sulfid-Silber-Verfahren. Dtsch. Ztschr. f. gerichtl. Med. 46, 701–711 (1958)

    Google Scholar 

  • Tyrer, N.M., Bell, E.M.: The intensification of cobalt-filled neurone profiles using a modification of Timm's sulfide-silver method. Brain Res. 73, 151–155 (1974)

    Google Scholar 

  • Ude, J., Eckert, M., Penzlin, H.: The frontal ganglion of Periplaneta americana L. (Insecta). An electron microscopic and immunohistochemical study. Cell Tissue Res. 191, 171–182 (1978)

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Dept. of Animal Physiology, Friedrich-Schiller-University, Erbertstr. 1, 69, Jena, DDR

    Joachim Ude & Hans Agricola

Authors
  1. Joachim Ude
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Hans Agricola
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

Dedicated to the 70th birthday of Prof. Dr. Manfred Gersch

The authors wish to thank Mrs. B. Cosack for excellent technical assistance

Rights and permissions

Reprints and permissions

About this article

Cite this article

Ude, J., Agricola, H. Synaptic connections of the Nervus connectivus in the frontal ganglion of Periplaneta americana L. (Insecta). Cell Tissue Res. 204, 155–159 (1979). https://doi.org/10.1007/BF00235172

Download citation

  • Accepted:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF00235172

Key words

Search

Navigation