A small bundle of nerve fibers, enclosed by the perineurium, is called a fasciculus; if the nerve is of small size, it may consist only of a single fasciculus; but if large, the fasciculi are collected together into larger bundles or funiculi, which are bound together in a common membranous investment.
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This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.
