Which type of fllament is anchored to the \( Z \) disc within a myofibril? A) Hzone flaments (C) Thick filaments D) Myosin filaments

The filament anchored to the \( Z \) disc within a myofibril is known as the thin filament, primarily composed of actin. These actin filaments extend from the \( Z \) discs and overlap with thick filaments (which are primarily made of myosin) during muscle contraction. This arrangement is crucial for the sliding filament model of muscle contraction, allowing for efficient muscle shortening and force generation. Moreover, the \( Z \) disc serves as an anchor point for the thin filaments, while the thick filaments are stationed in the center of the sarcomere, creating a dynamic interaction when muscle fibers contract. This elegant structure not only facilitates movement but also plays a vital role in maintaining muscle organization and strength during physical activity!