This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nervous System, Subject name: Physiology
Which of these sends K+ inside cells: 
Select and explain. 
A. Insulin, B. Glucagon, C. TSH, D. FSH
A: Insulin
Answer: A: Insulin 
Explanation: Ans A InsulinRef: Quantitative Human Physiology; An Introduction.pg. 191-92Insulin has two major roles: Sends glucose and potassium both intracellular, thereby decreasing their level (i.e. hypoglycaemia and hypokalemia).