A Roth 401(k) and a Roth IRA sound similar -- and they are. Contributions are made after taxes and earnings can be taken out tax-free after either five years or at age 59Â½.But the 401(k) version of the Roth has a couple of key differences from its IRA cousin.he contribution limits are the same as the traditional 401(k) limits, so with the Roth 401(k) you can get much more money into the plan than into an IRA, says Dean Barber, founder and president of Barber Financial Group.
Introduction. Nerves of the peripheral nervous system (PNS) are composed of numerous bundles of nerve fibers that are surrounded by connective tissue. This connective tissue also contains a specific layer that is specialised to neurons; the peri-neurium. The outer layer of this connective tissue is called the epineurium and it surrounds both the perineurium and the nerve itself. Individual neurons found within each bundle are surrounded by the endoneurium.
In the peripheral nervous system, nerve fibers are each wrapped in a protective sheath known as the endoneurium. These are bundled together into groups known as fascicles, each surrounded by a protective sheath known as 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.