Multiple Choice
Which of the following statements does NOT accurately describe electrical signaling in cardiac myocytes?
A) cardiac action potentials last 100X longer than those in a neuron or skeletal muscle
B) voltage-gated sodium channels open during membrane depolarization
C) voltage-gated calcium channels open during membrane polarization
D) hyperpolarization-activated cyclic nucleotide (HCN) channels release calcium from intracellular stores
Correct Answer:
Verified
Correct Answer:
Verified
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