Identify the connective tissue sheath surrounding a muscle fascicle.

Identify the connective tissue sheath surrounding a muscle fascicle.

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

Answer: (B)

In skeletal muscle organization, a fascicle is a bundle of muscle fibers, and the sheath that wraps that bundle is the perimysium. It sits between the inner layer that surrounds individual fibers (the endomysium) and the outer layer that envelops the entire muscle (the epimysium). The perimysium also contains larger blood vessels and nerves that serve the fascicles. By contrast, the endomysium surrounds each muscle fiber, the epimysium encloses the whole muscle, and fascia refers to broader connective tissue sheets that can surround groups of muscles.

In skeletal muscle organization, a fascicle is a bundle of muscle fibers, and the sheath that wraps that bundle is the perimysium. It sits between the inner layer that surrounds individual fibers (the endomysium) and the outer layer that envelops the entire muscle (the epimysium). The perimysium also contains larger blood vessels and nerves that serve the fascicles. By contrast, the endomysium surrounds each muscle fiber, the epimysium encloses the whole muscle, and fascia refers to broader connective tissue sheets that can surround groups of muscles.