How are Actin and Myosin Organized in Muscle Tissue?
In muscle tissue, actin and myosin are organized into repeating units called sarcomeres, which are the functional units of muscle fibers. Sarcomeres are delineated by Z discs, with actin filaments anchored to these discs and extending towards the center, overlapping with myosin filaments. This organization is key to the striation pattern observed in skeletal and cardiac muscles under a microscope.