Question

What are muscle fibers?​

Answer 1

Answer: Muscle fibers are single muscle cells.

Explanation: Muscle fibers are single muscle cells. When grouped together, they work to generate movement of your body and internal organs. You have three types of muscle tissue: skeletal, smooth, and cardiac. The muscle fibers in these types of tissue all have different characteristics and qualities.

Answer 2

Muscle fibers are long, cylindrical cells that make up skeletal muscles, which are responsible for the voluntary movement of our body. These muscle fibers are organized into bundles called fascicles, which are further connected to form the entire muscle. Each muscle fiber is composed of myofibrils, which are made up of repeating units called sarcomeres. Sarcomeres contain actin and myosin proteins, which interact to cause muscle contraction.