What Are Thin Filaments

The myofibrils are made up of thick and thin myofilaments, which help give the muscle its striped appearance. The thick filaments are composed of myosin, and the thin filaments are predominantly actin, along with two other muscle proteins, tropomyosin and troponin.

What are thin filaments called?

The myofibrils are made up of thick and thin myofilaments, which help give the muscle its striped appearance. The thick filaments are composed of myosin, and the thin filaments are predominantly actin, along with two other muscle proteins, tropomyosin and troponin.

What are thin filaments quizlet?

Terms in this set (8) thin filament. composed primarily of two long chains of many globular actin proteins (G-actin) G-actin. has an active site that will bind to the myosin protein on thick filaments so that it can move the thin filament during contraction.