What inside the cytoskeleton helps with cellular movement?

Microtubules play a significant role in cellular movement due to their structure and functions within the cytoskeleton. They are composed of tubulin protein subunits that assemble into long, hollow tubes, providing not only structural support but also serving as tracks for the movement of organelles and vesicles within the cell. This movement is facilitated by motor proteins, such as kinesin and dynein, that travel along the microtubules carrying cellular cargo.

Additionally, microtubules are essential for the separation of chromosomes during cell division, as they form the mitotic spindle that pulls chromosomes apart. This critical role in both movement and intracellular transport emphasizes their importance in maintaining cellular function and integrity. In this way, microtubules are a key component of the cytoskeletal network and are integral to various forms of cellular movement, including ciliary and flagellar motion, where they contribute to the beating of these structures for locomotion.