Which of the following electrolytes plays a crucial role in regulating the resting membrane potential of neurons?

A Sodium (Na+)
B Potassium (K+) ✓
C Calcium (Ca2+)
D Magnesium (Mg2+)

Explanation

Potassium ions are essential for maintaining the resting membrane potential of neurons, which is critical for proper neuronal function and communication.

Mnemonic

'K+' for 'Key' to neuronal function

Source

Berne and Levy Physiology
Electrolytes and Acid-Base Balance Physiology Neurophysiology Easy MEDICAL Confidence: high