A Nerve Consists Of Many Structures Including Axons, Glycocalyx, Endoneurial Fluid, Endoneurium, Perineurium, And Epineurium. Stock Photography

Each nerve is covered on the outside by a dense sheath of connective tissue, the epineurium. Beneath this is a layer of fat cells, the perineurium, which forms a complete sleeve around a bundle of axons. Perineurial septae extend into the nerve and subdivide it into several bundles of fibres. Surrounding each such fibre is the endoneurium.