Richard S. Snell, Clinical Neuroanatomy, 7th edition, 2010
At these gaps called nodes of Ranvier, the plasma membrane of the axon (the axolemma) is exposed to the extracellular space for about 0.5 mm.
Eric R. Kandel et al., Principles of Neural Science, 4th edition, 2000
These observations are all consistent with the hypothesis that the axolemmal membrane is necessary for the injury-induced formation of substantial numbers of vesicles or other membranous structures.
Christopher S. Eddleman et al., The Journal of Neuroscience, 1 June 1998