part of part of astrocyte fibrous astrocyte 2024-04-08T16:29:28Z A cell type located in the first layer of the neocortex with radial protrusions extending transversely into the deeper cortex layers, herby facilitating communication across neurons, astrocytes, capillaries, meninges and cerebrospinal fluid through contact with neurons, pia mater and capillaries. In humans, a fibrous astrocyte diameter is circa 182 µm. In rodents, a fibrous astrocyte diameter is circa 85 µm. white matter