What occurs when depolarization is less than the cell's threshold?
A) Sodium is prevented from crossing the membrane.
B) Potassium is prevented from crossing the membrane.
C) Sodium crosses the membrane only slightly more than usual.
D) The cell will still produce an action potential.

Question

Quizplus · Accepted Answer

When depolarization is less than the cell's threshold, sodium channels may open slightly, allowing a small amount of sodium to cross the membrane, but not enough to trigger an action potential.

What Occurs When Depolarization Is Less Than the Cell's Threshold