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.
Blood vessels and muscle tissue are also derived from mesenchyme, so that blood vessels and muscles are always embedded within connective tissue. Nerves grow out into connective tissue from the neuroectodermally derived central nervous system, so nerves are also embedded in connective tissue.XTRACELLULAR MATRIX. The extracellular matrix of connective tissue is composed of ground substance and fibers. In ordinary connective tissue, the ground substanc e consists mainly of water. The principal fiber type is collagen (the most abundant protein in the body), with elastic fibers as a minor element.