The permeability to ions of the neural lamella and the extracellular spaces in the C.N.S. of Anodonta cygnea.

D. B. Sattelle, E. A. Howes

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Rapid axonal depolarization follows the elevation of [K+]o in the Ringer bathing the surfaces of the connectives of both intact and desheathed cerebrovisceral connectives of Anodonta cygnea. Potassium movements between the blood or medium bathing the surface of the connectives and the axonal membranes can be accounted for in terms of a first-order diffusion process. No visible structural barriers to prevent free movements of materials through the neural lamella and the extracellular spaces can be detected in electron micrographs of the cerebro-visceral connectives. In desheathed preparations fast action potentials are conducted in sodium-free (dextran) Ringer. Mechanisms of axona .l function and ionic regulation in this and other invertebrate central nervous tissues are discussed in the light of these observations.
    Original languageEnglish
    Pages (from-to)421-431
    Number of pages10
    JournalJournal of Experimental Biology
    Volume63
    Issue number2
    Publication statusPublished - Oct 1975

    Fingerprint

    Dive into the research topics of 'The permeability to ions of the neural lamella and the extracellular spaces in the C.N.S. of Anodonta cygnea.'. Together they form a unique fingerprint.

    Cite this