Electrical Activity and Cardiac Cells
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Last updated 1:13 AM on 3/30/26
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6 Terms
1
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What are autorhythmic cells?
Cells that generate action potentials (pacemakers)
2
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What are contractile cells?
Cells that actually pump blood
3
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What is myogenic activity?
Heart generates its own electrical signals
4
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What ions are key in depolarization?
Na⁺ and Ca²⁺
5
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What causes repolarization?
K⁺ leaving the cell
6
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What is the pacemaker potential?
Slow depolarization to threshold in autorhythmic cells
