This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Anatomy
Resting membrane potential is determined by 
Select and explain. 
A. Na+, B. K+, C. CI-, D. Mg++
B: K+
Answer: B: K+ 
Explanation: Resting membrane potential CellsResting membrane potentialSkeletal muscle -90 mVSmooth muscle -50 to -75 mVCardiac muscle -85 to -95 mVNerve fibre -70 mVRods -40 mVInner ear cell-60 mVResting Membrane Potential is due to K+ Resting membrane Potential is close to the isoelectric potential of Cl-IPSP is due to Cl- influxEPSP is due to the K+ influx (Refer: Ganong's Review of Medical Physiology 24thedition, pg no: 87-89)