Does Myofibrils Contain Cell?

Myofibrils are the basic functional unit of skeletal muscle and are composed of syncytia of multinucleated cells that vary considerably in their biochemical and physiological properties.

What do myofibrils contain?

Myofibrils are composed of long proteins including actin, myosin, and titin, and other proteins that hold them together. These proteins are organized into thick and thin filaments called myofilaments, which repeat along the length of the myofibril in sections called sarcomeres.

What cells make up myofibrils?

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.