A layer of thin, concentrically arranged cells with interspersed collagen that lies within the epineurium. The perineurium is a component of the blood–nerve barrier and is essential for protecting axons and their associated Schwann cells from ionic flux, toxins and infection. [ NLXANAT:090205 http://www.ncbi.nlm.nih.gov/pubmed/25818566 http://www.ncbi.nlm.nih.gov/pubmed/18434767 ]
Term information
- EMAPA:37849 (MA:th)
- NCIT:C41407
- Wikipedia:Perineurium
- FMA:52585
- NCIT:C33302
- UMLS:C0205890 (ncithesaurus:Perineurium)
- SCTID:362299001
- BTO:0003153
- NLXANAT:090205
consider FBbt:00007090 (perineurium): The outer two layers of glial cells that cover the central nervous system and the nerves. The outer layer is the perineurial sheath (sometimes referred to as the perineurial sheath outer layer); the inner layer is the sub-perineural glial sheath (sometimes referred to as the perineurial sheath inner layer)
Term relations
- dense irregular connective tissue
- part of some nervous system
- has part some collagen trimer
- located in some epineurium
- part of some nerve fasciculus
- part of some blood nerve barrier
- bounding layer of some nerve fasciculus