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
Group A nerve fibers are most susceptible to 
Select and explain. 
A. Pressure, B. Hypoxia, C. Local anaesthetics, D. Temperature
A: Pressure
Answer: A: Pressure 
Explanation: Pressure on a nerve can cause loss of conduction in large diameter motor,touch& pressure fibre ( ie group A fibre) ,while pain sensation (group c fibre) remains relatively intact. Ref: Ganong&;s Review of medical physiology;25th edition; pg: 95.