A threshold stimulus applied to an excitable membrane is one that is just sufficient to
A)Trigger a graded potential in the membrane
B)Cause a change in membrane potential
C)Cause net inward movement of positive charge through the membrane
D)Be conducted to the axon hillock
E)Depolarize a dendrite

Question

Quizplus · Accepted Answer

A threshold stimulus is the minimum stimulus needed to cause a net inward movement of positive charge, leading to depolarization and potentially triggering an action potential.

A Threshold Stimulus Applied to an Excitable Membrane Is One