Localization of neurosecretion in the nervous system of Catenulida (Turbellaria) |
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Authors: | Jerzy Moraczewski Andrzej Czubaj Jolanta Kwiatkowska |
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Institution: | (1) Department of Cytology, Zoological Institute, University of Warsaw, Krakowskie Przedmieście, 26/28, 00-927 Warsaw, Poland |
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Abstract: | Summary The nervous system of the most primitive fresh-water Turbellaria of the order Catenulida was investigated. Neurosecretory
cells were found to occur in it. These cells have a structure similar to that of nerve cells, they only differ by the presence
of neurosecretion granules and a more developed golgi complex. In the simplest Catenulida,Stenostomun, neurosecretory granules are found both in the brain cells and in the trunks in the nerve fibres where they are rather randomly
distributed. Another representative of this family, the more highly organizedCatenula, exhibits specialized brain and nerve trunk regions containing neurosecretion granules.
This work was supported in part by the Committee on Cytobiology of the Polish Academy of Sciences |
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