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Struktur und Ultrastruktur von Nervenzellen und Synapsen

  • Konrad Akert
Conference paper
Part of the Verhandlungen der Gesellschaft Deutscher Naturforscher und Ärzte book series (NATURFORSCHER, volume 106)

Zusammenfassung

Anhand von licht- und elektronenmikroskopischen Befunden wird ein Bild über morphologische Besonderheiten und cytochemische Eigenschaften der Nervenzelle sowie über die Komplexität der Verbindungsnetze und Kontaktstellen vermittelt. Besondere Berücksichtigung erfährt die Feinstruktur der Synapse und deren Korrelation mit physiologischen Gegebenheiten. Fundamentale Konzeptionen, wie z.B. quantenhafte Freisetzung von Transmittoren, Gegenüberstellung elektrischer und chemischer bzw. exzitatorischer und inhibitorischer Kontaktstellen werden aus morphologischer Sicht überprüft. Die Entdeckung von Synaptoporen im präsynaptischen Bläschengitter von Axonendigungen wird erwähnt.

Summary

Morphological and cytochemical properties of the neuron and the complexity of interneuronal connections are discussed on the basis of light and electron microscopic data mainly derived from the vertebrate and invertebrate nervous system. The fine structure of synapses and its correlation with functional aspects is given special attention. Fundamental concepts such as the quantal release of transmitters and the contrasting organization of electrical vs. chemical, as well as excitatory and inhibitory synapses are examined from the structural point of view. The presence of synaptopores in the presynaptic vesicular grid of axonal endings is described.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1970

Authors and Affiliations

  • Konrad Akert
    • 1
  1. 1.Institut für HirnforschungUniversität ZürichZürichSchweiz

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