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Coordination of Juxtaposed Muscle Layers as Seen in Hydra

  • G. Kass-Simon

Abstract

Fish guts, rabbit oviducts, worms, blood vessels and Hydra share with each other the problem of coordinating juxtaposed layers of muscle. In Hydra, as in the viscera of vertebrates, there is now compelling evidence that this coordination is essentially mediated by nerves acting on sheets of electrically conducting muscle cells. In fact, the best way to look at Hydra, is probably to see it as a miniature vertebrate gut with nematocysts and tentacles. Looking at it in this way immediately causes much of its behavioral system to fall into place.

Keywords

Muscle Layer Synapsing Fibre Present Symposium Striate Muscle System Vertebrate Smooth Muscle 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Bibliography

  1. Frey, E. 1928. Giftwirkungen an dem quergestreiften Schleiendarm. Arch. f. exper. Pal, u. Pharmakol. 138: 228–239.CrossRefGoogle Scholar
  2. Horridge, G.A., 1968. Interneurons. W.H. Freeman & Co., London & San Francisco.Google Scholar
  3. Hufnagel, L., Borsay, D., and Kass-Simon, G. 1975. Ultrastructural basis for direct electrical coordination of ectodermal and endodermal epitheliomuscular cells in Hydra. J. Cell. Biol. 67: 185aGoogle Scholar
  4. Josephson, R.K. and Macklin, M. 1967. Transepithelial potentials in Hydra. Science 156: 1629–1631.PubMedCrossRefGoogle Scholar
  5. Kass-Simon, G. 1970. Multiple excitation sites and straight-line conduction in the contraction burst system of Hydra. Amer. Zool. 10: 505.Google Scholar
  6. Kass-Simon, G. 1972. Longitudinal conduction of contraction burst pulses from hypostomal excitation loci in Hydra attenuata. J. Comp. Physiol. (Z. Vergl. Physiol.) 80: 29–49.CrossRefGoogle Scholar
  7. Kass-Simon, G. 1973. Transmitting Systems in Hydra. Proc. 2nd Int. Symp. Publ. Seto Mar. Biol. Lab. Vol. 20.Google Scholar
  8. Kass-Simon, G. and Passano, L.M. 1969. Conduction pathways in Hydra. Amer. Zool. 9: 113.Google Scholar
  9. Lentz, T.L. 1966. The Cell Biology of Hydra. John Wiley and Sons, Inc., New York.Google Scholar
  10. Macklin, M. 1973. Water Excretion by Hydra. Science 179: 194–195.PubMedCrossRefGoogle Scholar
  11. McConnell, C.H. 1931. A detailed study of the endoderm of Hydra. J. Morphol. 53: 249–263.CrossRefGoogle Scholar
  12. Passano, L.M. and McCullough, C.B. 1963. Pacemaker hierarchies controlling the behavior of Hydra. Nature (Lond.): 1174-1175.Google Scholar
  13. Passano, L.M. and McCullough, C.B. 1964. Co-ordinating systems and behavior in Hydra. I. Pacemaker system of the periodic contractions. J. Exp. Biol. 41: 643–64Google Scholar
  14. Passano, L.M. and McCullough, C.B. 1965. Co-ordinating systems and behavior in Hydra. II. The rhythmic potential system. J. Exp. Biol. 42: 205–23PubMedGoogle Scholar
  15. Romanes, G.J. 1885. Jelly-fish, star-fish, and Sea Urchins being a research on Primitive Nervous Systems. D. Appleton & Co. New York.CrossRefGoogle Scholar
  16. Rushforth, N., Krohn, I., Brown, L. 1964. Behavior in Hydra: Inhibition of the Contraction Responses in Hydra pirardi. Science 11.5: 602–603.CrossRefGoogle Scholar
  17. Shibley, G. 1969. Gastrodermal contractions correlated with rhythmic potentials and prelocomotor bursts in Hydra. Amer. Zool. 9: 586.Google Scholar

Copyright information

© Springer Science+Business Media New York 1976

Authors and Affiliations

  • G. Kass-Simon
    • 1
  1. 1.Department of ZoologyUniversity of Rhode IslandKingstonUSA

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