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The fine structure of “non-specific” grey matter (Laminae V and VII) in the cat spinal cord

Experimental Brain Research volume 12, pages 379–388 (1971)Cite this article

Summary

Quantitative electron microscopical observations have been made on the afferent synaptology of neurones in laminae V and VII of the cervical spinal cord of the cat. Both laminae contain large bouton-covered polydendritic neurones of the type seen in the brainstem reticular formation. Each lamina contains two other categories of neurone. One of these, in lamina V, is peculiar in having a very high proportion of afferent boutons filled with dense-core vesicles; similar neurones exist in lamina VII, but their presynaptic afferents do not contain unusual quantities of dense-core vesicles. The third type of neurone in laminae V and VII seems to be identical with an oligodendritic neurone type found in the brainstem reticular formation and parafascicular-centromedian complex.

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References

  • Bowsher, D., Westman, J.: The gigantocellular reticular region and its spinal afferents: a light and electron microscope study in the cat. J. Anat. (Lond.) 106, 23–36 (1970a).

    Google Scholar 

  • - - Ultrastructural characteristics of the caudal and rostral brainstem reticular formation. Brain Res. 28 (in press).

  • Dahlström, A., Fuxe, K.: Evidence for the existence of monoamine neurons in the central nervous system. II. Experimentally induced changes in the intraneuronal amine levels of bulbospinal neuron systems. Acta physiol. scand. 64, Suppl. 247, 1–38 (1965).

    Google Scholar 

  • Pomeranz, B., Wall, P.D., Weber, W.V.: Cord cells responding to fine myelinated afferents from viscera, muscle, and skin. J. Physiol. (Lond.) 199, 511–532 (1968).

    Google Scholar 

  • Ralston, H. J.: The fine structure of neurons in the dorsal horn of the cat spinal cord. J. comp. Neurol. 132, 275–302 (1968a).

    Google Scholar 

  • — Dorsal root projections to dorsal horn neurons in the cat spinal cord. J. comp. Neurol. 132, 303–330 (1968b).

    Google Scholar 

  • Réthelyi, M.: Ultrastructural synaptology of Clarke's Column. Exp. Brain Res. 11, 159–174 (1970).

    Google Scholar 

  • Reynolds, S.: The use of lead citrate at high pH as an electronopaque stain in electron microscopy. J. Cell. Biol. 17, 208–212 (1963).

    Google Scholar 

  • Sjöstrand, F. S.: Ultrastructure of retinal rod synapses of the guinea-pig eye as revealed by three-dimensional reconstructions from serial sections. J. Ultrastruct. Res. 2, 122–170 (1958).

    Google Scholar 

  • Wall, P.D.: The laminar organisation of dorsal horn and effects of descending impulses. J. Physiol. (Lond.) 188, 403–424 (1967).

    Google Scholar 

  • -Personal communication (1970).

  • Watson, M.L.: Staining of tissue sections for electron microscopy with heavy metals. J. biophys. biochem. Cytol. 4, 475–478 (1958).

    Google Scholar 

  • Westman, J., Bowsher, D.: Fine structure of the centromedian parafascicular complex in the cat. Brain Res. 30 (in press).

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Author information

Affiliations

  1. Department of Human Anatomy, University of Uppsala, Sweden

    J. Westman & D. Bowsher

  2. Department of Human Anatomy, University of Liverpool, England

    J. Westman & D. Bowsher

Authors
  1. J. Westman
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  2. D. Bowsher
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Additional information

Work performed during tenure of a Royal Society European Programme Fellowship.

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Westman, J., Bowsher, D. The fine structure of “non-specific” grey matter (Laminae V and VII) in the cat spinal cord. Exp Brain Res 12, 379–388 (1971). https://doi.org/10.1007/BF00234493

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  • DOI: https://doi.org/10.1007/BF00234493

Key Words

  • Electron microscopy
  • Spinal cord
  • Neurone
  • Synapse