The Organization of the Neuro-Muscular System of the Diadumene Acontium

  • Tuneyo Wada


How is the neuro-muscular system organized in the acontium? This question arose in the course of a functional analysis (Wada, 1972, 1973) which showed decrementai conduction of semi-rhythmic contractions from the proximal toward the distal end. This was interpreted in terms of interneural facilitation, and it was assumed that there were numerous junctions in the nervous pathway at which delay occurred. In this paper, an attempt is made to clarify the nervous and muscular organization of the acontium, which is a singularly simple, linear preparation.


Bipolar Cell Sensory Cell Hanging Drop Nerve Element Ventral Muscle 
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Copyright information

© Springer Science+Business Media New York 1976

Authors and Affiliations

  • Tuneyo Wada
    • 1
    • 2
  1. 1.Department of BiologyOchanomizu UniversityTokyoJapan
  2. 2.Tateyama Marine LaboratoryTateyama, Chiba PrefectureJapan

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