myotubule

Example:Under the microscope, myofibrils appeared as longitudinal, sarcomeric elements of the skeletal muscle cells, composed of myofilaments including myosin and actin filaments.

Definition:A rodlike structure, composed of alternating dark and light bands of myofilaments (including myosin and actin filaments) found in muscle cells.

Example:The contraction of myotubules within the muscle fibers is what generates the force necessary for muscle movement.

Definition:A tissue in animals capable of contraction and can produce force and cause motion or changes in the shape of its component parts.

Example:Like other intermediate filaments, myotubules provide tensile strength and help maintain the integrity of the cell.

Definition:A type of cytoskeletal protein filament, with a diameter between that of microfilaments and microtubules, that is involved in the mechanical stability and organization of cells and tissues.