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Biology, 05.11.2019 04:31, EmanuelMarcos1572
1. what causes the autorhythmicity or action potentials of the nodal cells? a. a decrease in chloride permeability b. a gradual calcium efflux or movement out of the cell c. a gradual depolarization of the cell membrane until threshold is reached d. a gradual repolarization of the cell membrane until threshold is reached
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