Which of the following correctly describes a graded potential?
A) long distance signaling
B) amplitude of various sizes
C) voltage stimulus to initiate
D) voltage regulated repolarization

Question

Quizplus · Accepted Answer

Graded potentials are small changes in membrane potential that can vary in amplitude. They can be depolarizing (bringing the membrane potential closer to the threshold for an action potential) or hyperpolarizing (moving the membrane potential further away from the threshold). These signals are local and do not travel long distances like action potentials. They can be initiated by a variety of stimuli, not just voltage. Voltage-regulated repolarization is a characteristic of action potentials, not graded potentials.

Which of the Following Correctly Describes a Graded Potential