perineurial glial sheath [FBbt_00007089]

The outermost cellular layer of the nervous system, probably of mesodermal origin (Hartenstein and Jan, 1992). This layer consists of glial cells, which participate in nutrient uptake and establish a first diffusion barrier (Limmer et al., 2014).

perineurial glial sheath

ID: FBbt_00007089

Nervous system

The outermost cellular layer of the nervous system, probably of mesodermal origin (Hartenstein and Jan, 1992). This layer consists of glial cells, which participate in nutrient uptake and establish a first diffusion barrier (Limmer et al., 2014).

Evidence of mesodermal origin comes from the observation that embryos lacking mesoderm lack this cell layer and the overlying neural lamella (Edwards et al., 1993).

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## Classification

Relationships

Alternative Names

Synonym Scope Reference
perineurial sheath exact synonym
perineural sheath exact synonym
apical glial cell exact synonym Awasaki et al., 2008
neural lamella related synonym Hartenstein, 2011

Parts of perineurial glial sheath (13 total)

Thumbnail Name Tags
PNS perineurial glial cell Glial_cell, Nervous_system
adult brain perineurial glial cell Adult, Glial_cell, Nervous_system
adult perineurial glial cell Adult, Glial_cell, Nervous_system
embryonic/larval perineurial glial cell Glial_cell, Larva, Nervous_system
fenestrated glial cell Adult, Glial_cell, Nervous_system, Visual_system

View all 13 results in VFB →