What term describes a bundle of muscle fibers surrounded by perimysium?

What term describes a bundle of muscle fibers surrounded by perimysium?

• A. Fascicle
• B. Endomysium
• C. Myofibril
• D. Tendon

Answer: (A)

A fascicle is a bundle of muscle fibers wrapped by perimysium. This layer of connective tissue organizes several fibers into a cohesive unit and houses the blood vessels and nerves that supply those fibers. Inside each fascicle, each muscle fiber is surrounded by endomysium, and within each fiber lie the myofibrils—the contractile elements. The whole muscle is wrapped by an outer epimysium, and the tendon that connects muscle to bone is formed from dense regular connective tissue that continues from these coverings. So the bundle described by perimysium is a fascicle.

A fascicle is a bundle of muscle fibers wrapped by perimysium. This layer of connective tissue organizes several fibers into a cohesive unit and houses the blood vessels and nerves that supply those fibers. Inside each fascicle, each muscle fiber is surrounded by endomysium, and within each fiber lie the myofibrils—the contractile elements. The whole muscle is wrapped by an outer epimysium, and the tendon that connects muscle to bone is formed from dense regular connective tissue that continues from these coverings. So the bundle described by perimysium is a fascicle.