Which of these statements describes pacemaker activity
A) spontaneous depolarizations of the membrane resulting from shifts in passive ionic fluxes accompanying automatic changes in channel permeability
B) spontaneous depolarizations of the membrane due to cyclical changes in Na⁺-K⁺-pump activity
C) characteristic of single-unit smooth muscle and is not found in any other muscle type
D) characteristic of multiunit muscle and is not found in any other muscle type
Correct Answer:
Verified
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