Nerve fascicle
Bundle of funiculi (small bundles of axons) in the peripheral nervous system
A nerve fascicle is a bundle of nerve fibers belonging to a nerve in the peripheral nervous system.[1] A nerve fascicle is also called a fasciculus,[2] as is a nerve tract in the central nervous system.
A nerve fascicle is enclosed by perineurium, a layer of fascial connective tissue.[3] Each enclosed nerve fiber in the fascicle is enclosed by a connective tissue layer of endoneurium. Bundles of nerve fascicles are called fasciculi and are constituents of a nerve trunk.[4][1][5] A main nerve trunk may contain a great many fascicles enclosing many thousands of axons.[5]
In the central nervous system a bundle of nerve fibers is called a nerve tract, and in neuroanatomy different tracts in the spinal cord are bundled into fasciculi such as the medial longitudinal fasciculus. In the spinal cord fasciculi are bundled into columns called funiculi such as the anterior funiculus.
See also
- Epineurium
- Nervous tissue
References
- ^ a b Standring, Susan (2016). Gray's anatomy : the anatomical basis of clinical practice (Forty-first ed.). [Philadelphia]. p. 54. ISBN 9780702052309.
{{cite book}}: CS1 maint: location missing publisher (link) - ^ "The Peripheral Nervous System | SEER Training". training.seer.cancer.gov. Retrieved 7 January 2022.
- ^ Bordoni, B; Escher, AR; Tobbi, F; Ducoux, B; Paoletti, S (11 February 2021). "Fascial Nomenclature: Update 2021, Part 2". Cureus. 13 (2): e13279. doi:10.7759/cureus.13279. PMC 7880823. PMID 33604227.
- ^ "Definition of NERVE TRUNK". www.merriam-webster.com.
- ^ a b Standring, Susan (2016). Gray's anatomy : the anatomical basis of clinical practice (Forty-first ed.). [Philadelphia]. p. 26. ISBN 9780702052309.
{{cite book}}: CS1 maint: location missing publisher (link)
This article incorporates text in the public domain from page 728 of the 20th edition of Gray's Anatomy (1918)
External links
- Anatomy photo: nervous/pns/nerve1/nerve3 - Comparative Organology at University of California, Davis - "PNS, nerve (LM, Low)"
- Histology at neurobio.ucla.edu
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nerve fibers
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