Which connective tissue surrounds individual muscle fibers?

Which connective tissue surrounds individual muscle fibers?

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

Answer: (A)

The tissue that surrounds an individual muscle fiber is the endomysium. This thin layer isolates each fiber, providing a small, specialized environment with capillaries and nerves that supply the fiber. It also helps separate neighboring fibers so they can contract independently while still transmitting force to the surrounding connective tissue. In contrast, the perimysium wraps groups of fibers into a bundle called a fascicle, and the epimysium encases the entire muscle. Fascia refers to even broader sheets that surround muscles or muscle compartments. So endomysium is the correct layer for surrounding a single muscle fiber.

The tissue that surrounds an individual muscle fiber is the endomysium. This thin layer isolates each fiber, providing a small, specialized environment with capillaries and nerves that supply the fiber. It also helps separate neighboring fibers so they can contract independently while still transmitting force to the surrounding connective tissue.

In contrast, the perimysium wraps groups of fibers into a bundle called a fascicle, and the epimysium encases the entire muscle. Fascia refers to even broader sheets that surround muscles or muscle compartments. So endomysium is the correct layer for surrounding a single muscle fiber.