Presence of unmyelinated axons in the spinal root of the feline accessory nerve.

Abstract

The spinal root of the accessory nerve was studied electron microscopically at different levels in 3 adult cats. It was found that this nerve contains several unmyelinated axons. In the main nerve trunk the proportion of unmyelinated axon profiles was 27% at the level of the foramen magnum. In juxtamedullary root fascicles near the PNS/CNS transition the… (More)

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