Which structure separates neighboring muscles from each other?

Which structure separates neighboring muscles from each other?

• A. Epimysium
• B. Perimysium
• C. Endomysium
• D. Fascia

Answer: (D)

Fascia is the connective tissue that sits between neighboring muscles, forming deep sheets and intermuscular septa that partition muscles into compartments. Inside a muscle, the endomysium wraps individual fibers, the perimysium surrounds fascicles, and the epimysium surrounds the whole muscle. Those internal layers stay within one muscle, so they don’t separate muscles from each other. Fascia, on the other hand, lies between muscles and is the structure that creates the separations you see between neighboring muscles.

Fascia is the connective tissue that sits between neighboring muscles, forming deep sheets and intermuscular septa that partition muscles into compartments. Inside a muscle, the endomysium wraps individual fibers, the perimysium surrounds fascicles, and the epimysium surrounds the whole muscle. Those internal layers stay within one muscle, so they don’t separate muscles from each other. Fascia, on the other hand, lies between muscles and is the structure that creates the separations you see between neighboring muscles.