Effects of Zinc on Responses of Skeletal Muscle


Zn(++) potentiates the twitch tension of the frog's sartorius muscle by as much as two to three times, and prolongs twitch time parameters. Tetanus tension is unchanged, but fusion frequency is reduced. Thus, the basic mechanical effect of Zn(++) is prolongation, but not intensification, of the active state. Threshold effects appear at about 0.005 mM Zn… (More)

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