[Permeability to strontium ions and excitation-contraction coupling in skeletal muscle of frogs].
Electrical and mechanical activities of frog skeletal muscle fibres were simultaneously investigated under conditions which allow the development of a strontium permeability. It was shown that the contraction elicited by a long lasting Sr response depends upon two mechanisms: a potential dependent one, and a mechanism which is related to the entry of Sr ions into the cell through the tubular membrane.
D000818:Animals; D001001:Anura; D002413:Cations, Divalent / Q000378:metabolism*; D002463:Cell Membrane Permeability; D066298:In Vitro Techniques; D009119:Muscle Contraction; D009132:Muscles / Q000378:metabolism / Q000502:physiology*; D013324:Strontium / Q000378:metabolism
D002413:Cations, Divalent; D013324:Strontium
Perméabilité aux ions strontium et couplage excitation-contraction du muscle squelettique de grenouille.