Which tissue contains capillaries supplying each muscle fiber?

Which tissue contains capillaries supplying each muscle fiber?

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

Answer: (A)

Capillaries that supply each muscle fiber are located in the endomysium, the thin connective tissue layer that directly surrounds individual muscle fibers. This placement keeps capillaries very close to every fiber, allowing oxygen and nutrients to diffuse quickly into the fiber and waste products to be removed efficiently. The perimysium surrounds groups of fibers (fascicles) and contains larger vessels, but it doesn’t provide the direct capillary network for each fiber. The epimysium covers the whole muscle, and the sarcolemma is the muscle fiber’s cell membrane, not a tissue layer with capillaries.

Capillaries that supply each muscle fiber are located in the endomysium, the thin connective tissue layer that directly surrounds individual muscle fibers. This placement keeps capillaries very close to every fiber, allowing oxygen and nutrients to diffuse quickly into the fiber and waste products to be removed efficiently. The perimysium surrounds groups of fibers (fascicles) and contains larger vessels, but it doesn’t provide the direct capillary network for each fiber. The epimysium covers the whole muscle, and the sarcolemma is the muscle fiber’s cell membrane, not a tissue layer with capillaries.