Action of Vasoconstrictor Hormones and Calcium Entry Modulators on Electrical Activity and Intracellular Calcium of Smooth Muscle Cells
The A7r5 smooth muscle cell line, which was originally derived from rat aorta, was studied. These cells show a spontaneous electrical activity. Resting membrane potential was about -45mV. The cells displayed spontaneous overshooting acting potentials at a frequency of 0.1 to 0.5 Hz.