Answer
The neurolemma provides a regeneration tube that guides the growth of a severed nerve fiber. It is the outermost layer of the Schwann cell sheath that surrounds axons in the peripheral nervous system (PNS).
Work Step by Step
The neurolemma layer is found in the peripheral nervous system and not in the CNS. The outermost layer of the Schwann cell sheath is the neurolemma; the inner layer is the myelin layer. CNS axons are wrapped by oligodendrocytes, and do not have a neurolemma layer. Consequently, regeneration of damaged neurons usually does not occur in the CNS.
