When comparing action potentials to graded potentials, an/two important distinguishing characteristic/s is/are
A) graded potentials can undergo summation.
B) action potentials can undergo summation.
C) that the rate of action potentials is limited by the refractory period.
D) graded potentials can undergo summation and the rate of action potentials is limited by the refractory period.
E) action potentials can undergo summation and the rate of action potentials is limited by the refractory period.

Question

Quizplus · Accepted Answer

Graded potentials can indeed undergo summation, meaning they can add up to reach a threshold to trigger an action potential. Action potentials, on the other hand, are all-or-nothing events that do not summate but are limited by the refractory period, which is a brief period after an action potential during which a neuron cannot fire another action potential or the rate at which it can fire is greatly reduced.

When Comparing Action Potentials to Graded Potentials, An/two Important Distinguishing