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Physiology General d40ff095

Which of the following normally has a slowly depolarizing “prepotential”

A
Sinoatrial node
B
Atrial muscle cells
C
Bundle of His
D
Purkinje fibers
High-Yield Explanation
Rhythmically discharging cells have a membrane potential that, after each impulse, declines to the firing level. Thus, this prepotential or pacemaker potential triggers the next impulse.

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