Fig. 3.6. Myelinated nerve fibers in layer 4 of area 46 in a 25 year old monkey. One of the nerve fibers is sectioned at the level of the internode and the two other nerve fibers are sectioned at the level of the paranode, as shown by the close proximity of the axolemma and the membrane on the inside of the myelin sheath. Obviously, paranode 2 is closer to the node of Ranvier than paranode 1.
