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
Increased velocity of conduction in a nerve is oured by 
Select and explain. 
A. Increased capacitance, B. Decreased capacitance, C. Increased resistance, D. Increased velocity
A: Increased capacitance
Answer: A: Increased capacitance 
Explanation: In unmyelinated fibers, electrical impulses (action potentials) travel as continuous waves, but, in myelinated fibers, they "hop" or propagate by saltatory conduction. ... Myelin decreases capacitance and increases electrical resistance across the axonal membrane (the axolemma) Ref: guyton and hall textbook of medical physiology 12 edition page number:57,58,59