What is the primary effect of hypokalemia on the resting membrane potential of a neuron?

A Hyperpolarization ✓
B Depolarization
C No change
D Repolarization

Explanation

Hypokalemia, or low potassium levels, increases the negativity of the resting membrane potential, leading to hyperpolarization.

Mnemonic

Low K+ = Low excitement = Hyperpolarized

Source

Guyton and Hall Textbook of Medical Physiology
Electrolytes and Acid-Base Balance Physiology Electrolyte Imbalances Medium MEDICAL Confidence: high