Electron-microscopic observations on the cerebral ganglion of the fresh water mussel (Anodonta cygnea L.)

Zs.-Nagy, Imre (1964) Electron-microscopic observations on the cerebral ganglion of the fresh water mussel (Anodonta cygnea L.). A Magyar Tudományos Akadémia Tihanyi Biológiai Kutatóintézetének évkönyve, 31. pp. 147-152. ISSN 0365-3005

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Abstract

In the cerebral ganglion of Anodonta cygnea unipolar neurons without dendrite are arranged in the peripherial part while in the interior of the ganglion the neuropile is seen. In the plasma of the nerve cells several transitory forms of the neurosecretory granules can be observed. On the surface of the nerve cells structures are found which can be regarded as axo-somatic synapses, but axo-axonic synapses also occur in a great number. The terminal nerves contain synaptic vesicles and dense-core vesicles, often separated but frequently mixed to a diversified proportion. Around certain neurons special glia cells of lamellar structure are arranged in 8 to 14 layers, between which there are gaps containing a substance of fine pubescent structure.

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