| Perineurium | |
|---|---|
 Transverse section of human tibial nerve (perineurium labeled at upper right) | |
 Nerve structure | |
| Identifiers | |
| TA98 | A14.2.00.015 |
| TA2 | 6156 |
| FMA | 52585 |
| Anatomical terminology | |
The perineurium is a protective sheath that surrounds a nerve fascicle.[1] This bundles together axons targeting the same anatomical location.[1] The perineurium is composed from fibroblasts.[2]
In the peripheral nervous system, the myelin sheath of each axon in a nerve is wrapped in a delicate protective sheath known as the endoneurium. Fascicles, bundles of neurons, are surrounded by the perineurium. Several fascicles may be in turn bundled together with a blood supply and fatty tissue within yet another sheath, the epineurium. This grouping structure is analogous to the muscular organization system of epimysium, perimysium and endomysium.
- ^ a b McCracken, Thomas (1999). New Atlas of Human Anatomy. China: Metro Books. pp. 96–97. ISBN 1-5866-3097-0.
- ^ Weerasuriya, ANANDA (2005-01-01), Dyck, Peter J.; Thomas, P. K. (eds.), "Chapter 29 - Blood-Nerve Interface and Endoneurial Homeostasis", Peripheral Neuropathy (Fourth Edition), Philadelphia: W.B. Saunders, pp. 651–665, doi:10.1016/b978-0-7216-9491-7.50032-6, ISBN 978-0-7216-9491-7, retrieved 2020-11-18