When potassium concentrations in the extracellular fluid are increased, the resting potential
A) remains the same.
B) is reduced, making signaling less likely.
C) is reduced, making signaling more likely.
D) is increased, making signaling more likely.

Question

Quizplus · Accepted Answer

When potassium concentrations in the extracellular fluid are increased, the resting potential is reduced, making signaling less likely. This is because potassium ions are positively charged and when they build up outside the cell, they repel other positively charged ions and make it harder for them to move into the cell, thus reducing the potential for signaling.

When Potassium Concentrations in the Extracellular Fluid Are Increased, the Resting