perineurium
Sign in to saveAlso known as perineural sheath, perineurial sheath
The perineurium is a protective sheath that surrounds a nerve fascicle. This bundles together axons targeting the same anatomical location. The perineurium is composed from fibroblasts.
Key facts
- Anatomy.Name
- Perineurium
- Anatomy.Image
- Gray636.png
- Anatomy.Caption
- Transverse section of human tibial nerve (perineurium labeled at upper right)
- Anatomy.Image2
- Illu nerve structure.jpg
- Anatomy.Caption2
- Nerve structure
via Wikipedia infobox
~2 min read
Encyclopedic overview
5 sectionsContents
- Structure
- Clinical importance
- See also
- References
- External links
The perineurium is a protective sheath that surrounds a nerve fascicle. This bundles together axons targeting the same anatomical location. The perineurium is composed from fibroblasts.
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.
Excerpted from Wikipedia’s “perineurium” article, available under the CC BY-SA 4.0 licence.