As with Action Potentials in Other Types of Cells, the Repolarization

Multiple Choice

As with action potentials in other types of cells, the repolarization of cardiac muscle cells involves the

A) entrance of calcium through voltage-gated channels.
B) exit of potassium through voltage-gated channels.
C) entrance of sodium through voltage-gated channels.
D) binding of ACh to ACh receptor.
E) simultaneous closure of sodium channels and opening of calcium channels.