The cytoskeleton is a network of protein fibers and filaments that provides structure and support to cells. It helps maintain the cell's shape, much like a skeleton does for the body. The cytoskeleton is also involved in cell movement and division, playing a crucial role in processes like cellular transport and cell division. There are three main components of the cytoskeleton: microfilaments, intermediate filaments, and microtubules. Each of these components has specific functions, such as helping cells move or providing stability. The cytoskeleton is essential for many cellular activities, making it a vital part of all living organisms.