Regan Enjoys Running Marathons

Multiple Choice

Regan enjoys running marathons. While running, Regan uses a significant amount of energy. She uses much less energy when not running, but some is required to keep her going throughout the day. Regan's energy level between marathons is MOST similar to the _____ of a neuron.

A) action potential
B) resting potential
C) refractory period
D) threshold