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Pacemaker Potential
Pacemaker potential refers to the spontaneous gradual depolarization of the membrane potential in pacemaker cells, leading to the initiation of action potentials in certain heart cells.
SA Node
The sinoatrial node, often described as the heart's natural pacemaker, initiating the electrical impulses that set the pace for cardiac rhythm.
Voltage-gated
Refers to ion channels that open or close in response to changes in electrical potential across a cell's membrane.
Intercalated Discs
Specialized connections between heart muscle cells (cardiomyocytes) that facilitate coordinated contraction.
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