Changes in the membrane potential that cannot spread far from the site of stimulation are called
A) threshold.
B) graded potentials.
C) refractories.
D) hyperpolarizations.
E) action potentials.

Question

Quizplus · Accepted Answer

Graded potentials are changes in the membrane potential that are localized and cannot spread far from the site of stimulation. In contrast, action potentials are the rapid changes in membrane potential that can propagate along the length of an axon. Threshold refers to the minimum level of depolarization required to trigger an action potential, refractories refer to the periods of time during which a neuron cannot generate another action potential, and hyperpolarizations refer to changes in membrane potential that make the neuron less likely to fire an action potential.

Changes in the Membrane Potential That Cannot Spread Far from the Site