Louis-Antoine Ranvier

 

 Louis-Antoine Ranvier (1835–1922) was a French physician, anatomist, and histologist. He worked during a period when microscopy was transforming biology and medicine.

 

                                       

             

 

 

 Louis-Antoine Ranvier To Nodes Of Ranvier  

 

 

Nodes of Ranvier (1878)

His most famous discovery was the identification of periodic gaps in the myelin sheath of nerve fibers.

Key observations:

• Myelin is segmented, not continuous

• Gaps occur at regular intervals

• These interruptions later proved essential for saltatory conduction

   
  
  Node Of Ranvier On Electron Microscopy

   

   

   

  Working Of Nodes Of Ranvier  

   

   

  Action Potential Occurs At The Node Of Ranvier  

   

   

   

   

   

   

  
  

  Action Potential Of Neuron 

   

   

   

   

   

   

   

  Current Events 

   

   

  

   

   

   

   

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