Which connective tissue layer surrounds multiple muscle fibers to form a fascicle?

Which connective tissue layer surrounds multiple muscle fibers to form a fascicle?

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

Answer: (B)

Muscle organization hinges on how connective tissue wraps different levels of structure. Each muscle fiber is encased in endomysium. When you take a bundle of these fibers, the surrounding connective tissue is perimysium, which forms the fascicle. The entire muscle is then wrapped by epimysium. The sarcolemma is the plasma membrane that encloses a single muscle fiber, not a layer around multiple fibers. So, the connective tissue layer that surrounds multiple muscle fibers to form a fascicle is the perimysium. It also houses small blood vessels and nerves supplying the fascicle.

Muscle organization hinges on how connective tissue wraps different levels of structure. Each muscle fiber is encased in endomysium. When you take a bundle of these fibers, the surrounding connective tissue is perimysium, which forms the fascicle. The entire muscle is then wrapped by epimysium. The sarcolemma is the plasma membrane that encloses a single muscle fiber, not a layer around multiple fibers. So, the connective tissue layer that surrounds multiple muscle fibers to form a fascicle is the perimysium. It also houses small blood vessels and nerves supplying the fascicle.