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Specializations of Subsynaptic Cytoplasms. Comparison of Axospinous Synapses and Neuromuscular Junctions

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Cellular and Molecular Basis of Synaptic Transmission

Part of the book series: NATO ASI Series ((ASIH,volume 21))

Abstract

When chemical synapses of the axosomatic, axodendritic and neuromuscular types are compared at ultrastructural level, the pattern of their organization seems fairly uniform, as regards the axon terminals and the complexes formed by pre- and postsynaptic membranes, and by the electron-dense structures attached to the cytoplasmic surfaces of these membranes. However, the same does not always apply to the deep part of the subsynaptic cytoplasm, which may display particularities of various kinds, relating, for example,to the smooth endoplasmic reticulum or to the cytoskeleton. The subsynaptic cytoplasm may also contain, under the postsynaptic density, an electron-dense material whose distribution varies, depending on the type of synapse.

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  1. Institut des Neurosciences du C.N.R.S., Département de Cytologie, Université Pierre-et-Marie-Curie, 75005, Paris, France

    René Couteaux

  2. Department of Pathology, Charles University Hospital, CS-500, Hradec Králové, Czechoslovakia

    Josef Špaček

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  1. René Couteaux
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  1. AK Neurochemie, Zoologisches Institut der J. W. Goethe-Universität, Siesmayerstraße 70, 6000, Frankfurt am Main, Germany

    Herbert Zimmermann

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Couteaux, R., Špaček, J. (1988). Specializations of Subsynaptic Cytoplasms. Comparison of Axospinous Synapses and Neuromuscular Junctions. In: Zimmermann, H. (eds) Cellular and Molecular Basis of Synaptic Transmission. NATO ASI Series, vol 21. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-73172-3_2

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