What is the thin membrane between the myelin sheath and the endoneurium called?

What is the thin membrane between the myelin sheath and the endoneurium called?

• A. Neurilemma
• B. Myelin Sheath
• C. Peripheral Nerves
• D. Muscle Tissue

Answer: (A)

The thin membrane between the myelin sheath and the endoneurium is the neurilemma. This outer layer of the Schwann cell surrounds the axon and its myelin, sitting just inside the endoneurium. It contains the Schwann cell’s nucleus and cytoplasm and is important for nerve repair, providing a guide for regenerating axons in the peripheral nervous system. The myelin sheath itself is the insulating layer around the axon, the endoneurium is the surrounding connective tissue; the neurilemma is the outermost Schwann cell membrane between them.

The thin membrane between the myelin sheath and the endoneurium is the neurilemma. This outer layer of the Schwann cell surrounds the axon and its myelin, sitting just inside the endoneurium. It contains the Schwann cell’s nucleus and cytoplasm and is important for nerve repair, providing a guide for regenerating axons in the peripheral nervous system. The myelin sheath itself is the insulating layer around the axon, the endoneurium is the surrounding connective tissue; the neurilemma is the outermost Schwann cell membrane between them.