What Are the Key Histological Structures Involved in Muscle Contraction?
Several key histological structures are involved in muscle contraction:
Sarcomere: The basic contractile unit of striated muscle, composed of repeating units of actin and myosin filaments. T Tubules: Invaginations of the sarcolemma that facilitate the rapid transmission of the action potential into the muscle fiber. Sarcoplasmic Reticulum: Specialized endoplasmic reticulum that stores and releases calcium ions.
