Voltage-dependent calcium and potassium conductances in striated muscle fibers from the scorpion, Centruroides sculpturatus

@article{Gilly1993VoltagedependentCA,
  title={Voltage-dependent calcium and potassium conductances in striated muscle fibers from the scorpion, Centruroides sculpturatus},
  author={Wm. F. Gilly and Todd Scheuer},
  journal={The Journal of Membrane Biology},
  year={1993},
  volume={134},
  pages={155-167}
}
Ionic currents responsible for the action potential in scorpion muscle fibers were characterized using a three-intracellular microelectrode voltage clamp applied at the fiber ends (8–12°C). Large calcium currents (I Ca) trigger contractile activation in physiological saline (5 mm Ca) but can be studied in the absence of contractile activation in a low Ca saline (≤2.5 mm). Barium (Ba) ions (1.5–3 mm) support inward current but not contractile activation. Ca conductance kinetics are fast (time… CONTINUE READING