Muscle fiber features called Sarcomere are repeating units within muscle fibers that act as the functional units of muscle contraction.
Because the actin and myosin filaments that drive their contraction are arranged into repeating arrays, or sarcomeres, that have a striated microscopic appearance, skeletal and cardiac muscles are known as striated muscles.
What is the purpose of muscle fiber?
Muscle fibers' main function is to regulate the forces that go through the body. The quadriceps and gluteus maximus shorten as the body changes from a seated to a standing position to help the body resist gravity. Similar activities may be used to create force to move a resistance.
Where can you find muscle fiber?
Except for the heart, smooth muscle fibers are spindle-shaped, involuntary, and located in the walls of hollow visceral organs (such as the liver, pancreas, and intestines). Skeletal muscle fibers can be found in muscles that are attached to bones.
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