Skeletal muscle tissue controls all conscious body movements, including limb movement, facial expressions, and swallowing. Skeletal muscle contractions produce most of the body’s heat as a result of cellular metabolic processes. Shape makes them different from other muscle tissues. In fetal development, skeletal muscle cells are formed by the union of several smaller cells, resulting in long, straight muscle fibers with many nuclei.
Microscopically, skeletal muscle cells have striped light and dark regions. These stripes are caused by actin and myosin proteins forming myofibrils in cells. Myofibrils are responsible for the skeletal muscles’ incredible strength and ability to push and pull the body.
Skeletal muscle tissue controls all conscious body movements, including limb movement, facial expressions, and swallowing. Skeletal muscle contractions produce most of the body’s heat as a result of cellular metabolic processes. Shape makes them different from other muscle tissues. In fetal development, skeletal muscle cells are formed by the union of several smaller cells, resulting in long, straight muscle fibers with many nuclei.
Microscopically, skeletal muscle cells have striped light and dark regions. These stripes are caused by actin and myosin proteins forming myofibrils in cells. Myofibrils are responsible for the skeletal muscles’ incredible strength and ability to push and pull the body.