Human anatomy, including structure and development and practical considerations . Node of Raiivier Medullated nerve-fibres after treatmentwith osmic acid; A, fibre showing reticu-lum within medullar)- coat; li, one showingsame coat divided into segments. ,< Medullated nerve-fibres becoming nonmedullated on a|>i>roachiiigtheir termination. •; 235. Depending ujjon the presence or absence of the medullary sheath throughoutthe greater part of their course, nerve-fibres are distinguished as medullated or non- Archiv f. mikros. Anat. u. Kntuick., Bd. 66, 1905.• ^Journal of Comparative
Human anatomy, including structure and development and practical considerations . Node of Raiivier Medullated nerve-fibres after treatmentwith osmic acid; A, fibre showing reticu-lum within medullar)- coat; li, one showingsame coat divided into segments. ,< Medullated nerve-fibres becoming nonmedullated on a|>i>roachiiigtheir termination. •; 235. Depending ujjon the presence or absence of the medullary sheath throughoutthe greater part of their course, nerve-fibres are distinguished as medullated or non- Archiv f. mikros. Anat. u. Kntuick., Bd. 66, 1905.• ^Journal of Comparative Neurology, vol. xiii., 1903. THE NERVOIS TISSUES. lOo: medullated. The medullated fibres tlic orcuL iiKijoriiy of those inakiiii;up the peripheral nerves and the tracts of the cerehro-spinal axis ; the componentfibres of the latter, however, while niedullated are without the neurilennna. Thenonmedullated fibres, on the other hand, are chiefly prolongations (axones) fromthe gaui^lion cells of the sympathetic system, althouj^h in the case of the olfactorynerves the fibres are also without a myelin-coat. The dis-tinction between these two classes of fibres is relative rather than Fu;. ., since every medullated nerve-fibre becomes no
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