COORDINATION OF COMPOUND ASCIDIANS BY EPITHELIAL CONDUCTION IN THE COLONIAL BLOOD VESSELS
نویسندگان
چکیده
منابع مشابه
COORDINATION OF COMPOUND ASCIDIANS BY EPITHELIAL CONDUCTION IN THE COLONIAL BLOOD VESSELSt
Bursts of electrical potentials propagate at ca. 2.0 cm s' within the colonial vascularsystem ofBotryllus, Botryioides, and Metandrocarpa, servingto coordinate contractions of the vascular ampullae and mediating protective closure and ciliary arrest in zooids. Nerves are absent from the vessels and ampullae. Impulses are presumed to propagate from cell to cell in the vascular epithelium via gap...
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15 صفحه اولColonial conduction systems in the Anthozoa: Octocorallia.
1. The octocorals Alcyonium digitatum, Pennatula phosphorea and Virgularia mirabilis each have a through-conducting nerve net. The nerve net demonstrated electrophysiologically may well be the same as that previously shown by the use of histological techniques. 2. It exhibits both facilitation and defacilitation in the rate of conduction of pulses. 3. The distance of spread of nerve net activit...
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ژورنال
عنوان ژورنال: The Biological Bulletin
سال: 1983
ISSN: 0006-3185,1939-8697
DOI: 10.2307/1541365