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
True about nodes of ranvier 
Select and explain. 
A. No myelin, B. Rich in sodium channels, C. Both, D. None
C: Both
Answer: C: Both 
Explanation: Nodes of ranvier are seen in myelinated neurons They are not covered by myelin sheath and are rich in It leads to saltatory type of conduction Ref:Guyton and Hall textbook of medical physiology 12th edition,page number:72,73