This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
Conduction in which type of nerve fibres is blocked maximally by pressure 
Select and explain. 
A. C fibres, B. A- alpha fibres, C. A - Beta, D. A- gamma
B: A- alpha fibres
Answer: B: A- alpha fibres 
Explanation: The velocity of conduction through a nerve fiber is directly proportional to the thickness of the axon.
Thickest and fastest is A fibers. Among A fibers, the thickest is Aα. Hence the maximum affected by pressure will be Aα.