

Author: Orrhage Lars Müller Monika
Publisher: Springer Publishing Company
ISSN: 0018-8158
Source: Hydrobiologia, Vol.535, Iss.1, 2005-03, pp. : 79-111
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Abstract
The article summarizes our up to date knowledge about the morphology of the annelid, especially the polychaete, central and peripheral nervous system. Since the cephalic nervous system was in the focus of controversial discussions for decades, the structure of its neuropile, associated ganglia and nerves is reviewed in detail. The enormous variation of the ventral nerve cord and peripheral nerves is presented as well as a theory how this might have evolved. A ground pattern of the polychaete nervous system is suggested, based on developmental and regeneration studies.
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