Which connective tissue surrounds the entire nerve?

Which connective tissue surrounds the entire nerve?

• A. Epineurium
• B. Perineurium
• C. Peripheral nerve
• D. Nodes of Ranvier

Answer: (A)

The outermost connective tissue layer that wraps an entire nerve is the epineurium. It is a dense irregular connective tissue that encloses all the nerve fascicles together and provides protection and support, with blood vessels running through it. Inside the nerve, each fascicle is wrapped by the perineurium, and each individual axon within a fascicle is surrounded by the endoneurium. Nodes of Ranvier are gaps in the myelin sheath along the axon, not surrounding layers of connective tissue around the nerve.

The outermost connective tissue layer that wraps an entire nerve is the epineurium. It is a dense irregular connective tissue that encloses all the nerve fascicles together and provides protection and support, with blood vessels running through it. Inside the nerve, each fascicle is wrapped by the perineurium, and each individual axon within a fascicle is surrounded by the endoneurium. Nodes of Ranvier are gaps in the myelin sheath along the axon, not surrounding layers of connective tissue around the nerve.