The framework of the cell that is composed of a variety of filaments and fibers is called the cytoskeleton.
The cytoskeleton is a dynamic network of proteins that gives the cell its shape, provides mechanical support, and facilitates movement both within the cell and of the cell itself. It consists of three main types of fibers: microfilaments, intermediate filaments, and microtubules. Microfilaments are involved in muscle contraction and cell division, intermediate filaments provide structural support, and microtubules are key for intracellular transport and maintaining cell shape.
By interacting with motor proteins, the cytoskeleton enables cells to move and change shape, which is essential for processes such as cell division, wound healing, and immune responses. Therefore, the cytoskeleton is fundamental to maintaining the integrity and functionality of cells.