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An experimental drug opens calcium channels in the cell membrane of cardiac cells, allowing a small amount of extracellular calcium to enter the cardiac cell. What would you expect to occur as a result of this small increase in intracellular calcium?
O Inhibition of actin and myosin
O Release of calcium from the sarcoplasmic reticulum
O Hyperpolarization of the cell membrane
O Decreased heart rate
O Decreased force of contraction of the heart