Structure of a skeletal muscle - Muscle Physiology Animations || USMLE videos

Skeletal muscle is an organ composed of muscle fibers, connective tissues, blood vessels, and nerves. Muscle fibers are wrapped in endomysium, grouped into fascicles covered by perimysium, and surrounded by epimysium and deep fascia. Myofibrils within fibers contain thick myosin and thin actin filaments, crucial for muscle contraction through calcium ion interaction.