Ultrastruktur der spinalen Liquorkontaktneurone beim Krallenfrosch (Xenopus laevis)

Translated title of the contribution: Ultrastructure of the spinal liquor contacting neurons in the clawed toad (Xenopus laevis)

B. Vigh, I. Vigh-Teichmann, B. Aros

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Nerve cells are situated between and below the ependymal cells of the central canal of the spinal cord of Xenopus laevis. The intraependymal neurons are round-shaped; they contact the cerebrospinal fluid by a large surface from which longer and shorter processes and a cilium (type 9+2) arise into the lumen. The hypendymal neurons are bipolar; their dendrite ramifies also into finger-like processes in the cerebrospinal fluid. The liquor contacting processes of both cell types contain fine filaments. The Reissner's fibre contacts some of the processes. In the intra- and hypendymal perikarya, small dense-core vesicles (diameter 600-900 Å) are found besides of endoplasmic reticulum, Golgi-areas and mitochondria. The distal process of both neuron types has neurite character. Axons containing synaptic and granulated (diameter 800-1200 Å) vesicles, form relatively few synapses with the liquor contacting neurons. In the hypendymal neuropile, multipolar nerve cells occur that contain granulated vesicles with a diameter of about 1000-1200 Å. On the basis of the morphological picture, the possible role of the liquor contacting processes and of the cilium in the function of the liquor contacting neurons are discussed.

Translated title of the contributionUltrastructure of the spinal liquor contacting neurons in the clawed toad (Xenopus laevis)
Original languageGerman
Pages (from-to)201-211
Number of pages11
JournalZeitschrift für Zellforschung und Mikroskopische Anatomie
Volume112
Issue number2
DOIs
Publication statusPublished - Jun 1 1971

Keywords

  • Liquor contacting neurons
  • Reissner's fibre
  • Spinal cord
  • Xenopus laevis

ASJC Scopus subject areas

  • Pathology and Forensic Medicine
  • Histology
  • Cell Biology

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