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Phosphatase inhibition by calyculin A increases if in canine Purkinje fibers and myocytes
The actions of the phosphatase inhibitor calyculin A on the pacemaker current if were studied in canine Purkinje fibers and myocytes. Calyculin A increased if in response to hyperpolarizations toward the middle o...
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Chapter
Repetitive Activity: Origin of the Na+ Load and its Physiologic Effects
At a constant heart rate, the heart is in a steady state. This means that with each beat the Na+, Ca2+, and K+, which cross the membrane during each action potential, must be returned to their original site insid...
