During the Late Phase of an Action Potential, the Threshold

Multiple Choice

During the late phase of an action potential, the threshold for activating a subsequent action potential is larger than when the neuron is at rest. This relative refractory period is due to a very large

A) increase in sodium conductance.
B) increase in potassium conductance.
C) decrease in potassium conductance.
D) increase in chloride conductance.
E) decrease in calcium conductance.