Multiple Choice
Depolarization of a cardiac muscle cell occurs as the result of
A) a decrease in the permeability of the plasma membrane to Na+.
B) the opening of voltage-gated Na+ channels and voltage-gated Ca2+ channels.
C) the closure of voltage-gated Ca2+ channels.
D) the opening of voltage-gated K+ channels.
E) the closure of the voltage-gated Na+ channels.
Correct Answer:
Verified
Correct Answer:
Verified
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