This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
Repolarization is due to 
Select and explain. 
A. Sodium, B. Efflux of potassium, C. Influx of potassium, D. All
C: Influx of potassium
Answer: C: Influx of potassium 
Explanation: Repolarization occurs mainly due efflux of potassium Inactive gates of sodium channels also close Ref:Guyton and Hall textbook of medical physiology 12th edition,page number:66,67