What does skeletal muscle contain?

• A. Nerves only
• B. Blood vessels only
• C. Muscle fibers, nerves, and blood vessels
• D. Muscle fibers only

Answer: (C)

Skeletal muscle tissue includes three integrated components: the muscle fibers that actually contract, the nerves that stimulate those contractions, and the blood vessels that supply oxygen and nutrients while removing wastes. The muscle fibers are the contractile units, arranged in bundles called fascicles, and they require motor neurons to trigger contraction at the neuromuscular junction. A rich network of blood vessels runs with these fibers to meet the high energy demands during activity. If any one of these parts were missing, the tissue wouldn’t function properly—without nerves, it wouldn’t contract; without blood vessels, it wouldn’t sustain activity or recover efficiently. So the presence of muscle fibers, nerves, and blood vessels together best describes skeletal muscle.