This is the location of the myelin sheath which due

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Unformatted text preview: rea will be seen around each axon. This is the location of the myelin sheath, which due to its high lipid content is dissolved in this type of preparation (Nerve Bundle 4). Only in specimens fixed in osmium tetroxide (OsO4 ) will the myelin be preserved and, in this case, stained black (Nerve Bundle 5). The myelin sheath is also visible in teased preparations. Here the gaps in the sheath, the Nodes of Ranvier, are easily observed (Teased Nerve). Many of the nuclei seen within a nerve bundle are fibroblast nuclei. Their presence is needed to synthesize and maintain the connective tissue wrappings. Other nuclei represent the Schwann Cells, a PNS glial cell responsible for myelination of...
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This note was uploaded on 12/13/2012 for the course 146 322 taught by Professor Babiarz during the Spring '12 term at Rutgers.

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