|Transverse section of human tibial nerve.|
|Gray's||subject #183 728|
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.
See also 
- Organology at UC Davis nervous/pns/nerve1/nerve3 - "PNS, nerve (LM, Low)"
- Histology at neurobio.ucla.edu
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