Which term best describes the tissue depicted in the diagram?

Which term best describes the tissue depicted in the diagram?

• A. Peripheral nerve
• B. Endoneurium
• C. Epineurium
• D. Perineurium

Answer: (A)

In peripheral nerves, several protective connective tissue layers organize the nerve as a whole, with specific layers wrapping structures inside. The image you’re looking at shows a nerve as a bundle of multiple fascicles enclosed together by a surrounding sheath. That whole structure, the nerve itself, is what this tissue represents. The other terms describe particular wrappers: endoneurium surrounds each individual axon, perineurium wraps around each fascicle, and epineurium is the outermost layer that encloses the entire nerve. Since the diagram depicts the complete nerve with its fascicles inside, the best term is the peripheral nerve.

In peripheral nerves, several protective connective tissue layers organize the nerve as a whole, with specific layers wrapping structures inside. The image you’re looking at shows a nerve as a bundle of multiple fascicles enclosed together by a surrounding sheath. That whole structure, the nerve itself, is what this tissue represents. The other terms describe particular wrappers: endoneurium surrounds each individual axon, perineurium wraps around each fascicle, and epineurium is the outermost layer that encloses the entire nerve. Since the diagram depicts the complete nerve with its fascicles inside, the best term is the peripheral nerve.