🦷 DAT Exam Prep

The sodium-potassium pump maintains the resting membrane potential by:

A Moving K+ out
B Pumping 3 Na+ out and 2 K+ in per ATP, creating a net negative charge inside
C Moving Cl- in
D Equalizing charges

✓ Correct Answer: Option B

Na+/K+-ATPase: 3 Na+ out, 2 K+ in. Maintains the -70mV resting potential essential for nerve/muscle function.

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